Equally intricately engineered is this FD's interior, where the form-follows-function rule was all but written. Aoki-san's first step was to completely gut the FD's interior down to the bare metal, and stitch weld every seam in its unibody to increase overall rigidity. Adding to it, and protecting the car and driver in the event of unforeseen off-track jaunts, is an incredibly complex rollcage that joins the FD's floor, roof, A-, B-, and C-pillars, and extends into the engine bay and trunk to tie in the strut towers, almost completely eliminating body flex. And if doing two jobs at once weren't enough, the cage was further modified to support a trunk-mounted fuel cell, and pressurized AP Racing air-jack system at each corner. Driver interface was limited to only what was needed: a Recaro carbon-Kevlar bucket, MOMO wheel, MoTeC LCD data screen, ECU and telemetry module, and a switch panel. Remember the full carbon replacement hatch? An LCD screen and rear-mounted camera replace the rear-view mirror and glass to allow the driver a view of what's going on behind his machine.
A fully track-prepped interior and exterior could only make sense combined with an equally suited suspension, and with such drastic changes made to the FD thus far, Revolution opted to completely scrap the stock components, and engineer one-off parts specific to their needs. Minding the FD's lower stance, increased girth, and necessary changes to geometry, a custom double wishbone setup was constructed from the ground up, consisting of custom-fabricated adjustable control arms, brackets and rose joints, and custom, CNC-machined replacement hubs that relocate control arm and tie-rod end mounting points for a modified steering radius, lowered stance, and ideal roll center, camber gain and scrub radius. Ultra-stiff Swift springs and custom-valved Revolution dampers keep the chassis elevated, and Project Mu big brakes with 999 race-spec pads round out corner modification for obvious reasons. Nothing was shared about spring rate or damper valving; this car is, after all, still in competition.
For all its radical modification thus far, that the heart of this competition monster remains surprisingly mild might come as a shock to some. Don't let it; posting fast laps has a lot to do with how much power a car produces, but more to do with how readily available it is to the driver. Aoki-san and the Revolution crew knew throttle response and area under the curve were priority number one and peak power number two, so they began by porting the 13B in an undisclosed manner that would flow high amounts of air from their HKS T04Z turbo, but more importantly, develop power predictably at full or partial throttle across a broad RPM range. A Hewland six-speed sequential gearbox was added to allow for full-throttle shifts, to further improve throttle response and decrease lag, and an ATS 1.5-way LSD with a shortened final drive keeps the FD's 13B high in the RPM range, and its wheels firmly planted on the tarmac. Boost is limited to 1.35 bar, to produce just over 540 whp, which, factoring in the car's 960 kg (2,116.4 lbs) weight, gives it the highest power-to-weight ratio of any known FD in competition.
With thousands invested, and their reputation on the line, Aoki-san and the Revolution crew charged the competition in the first event they could. In its shakedown runs at the '08 Tsukuba Super Battle (in rough weather), it completed the circuit in 56.094 seconds--fast enough to beat every other FR machine in competition, and finish Second overall, less than one second off the First Place spot. With the '09 Tsukuba season kicking off, will the Revolution crew be able to improve their FD's time by a mere .744 seconds, to topple a record thought by many to stand for years to come? You know where we're placing our bets!