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1990 Mercury Cougar XR7

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Tetsu Kaze Assault treats the R34 like a tool, not a relic: a street-legal time-attack Skyline built for cold-tire sprints up a mountain road and repeatable laps without heat-soak excuses. The widebody isn’t cosplay—it’s packaging. 115mm front and 145mm rear of faceted overfender architecture wraps real tire, real track width, and real extraction, with hard edges that read like plated armor because they’re shaped around airflow and clearance first.
Under the indigo satin and restrained gold foil, the engineering tells the story: a modest wheelbase stretch to calm high-speed rotation, shortened overhangs for initial bite, and an aero stack that’s aggressive but believable—splitter, flat floor, and a diffuser that works with the rear volume instead of fighting it. It’s the kind of build that would upset purists in a parking lot, then silence them the first time it strings corners together.
Inspect drawing ↗Open blueprint study →
Inspect poster ↗Fictional engineering concept
1999 Nissan Skyline GT-R R34
RB26DETT retained with upgraded twin turbos for fast midrange response over peak dyno numbers
Titanium exhaust for heat control and weight reduction, sized for sustained boost without backpressure drama
Front-mounted radiator package with fender NACA duct feed and improved heat rejection
Brake and underhood airflow management via hood inlets and controlled extraction paths
Carbon hood with 40mm central spine and paired angular inlets for pressure management and cooling feed
Front splitter matched to widened track with ducting emphasis over excessive overhang
Flat underfloor leading into a 250mm extended, triple-channel rear diffuser
1600mm triple-element rear wing on reinforced sword-profile pylons (720mm height)
Quarter-panel extraction channels tied into rear flare volume to evacuate wheelhouse pressure
1999 Nissan Skyline GT-R R34
Front: Volk Racing TE37V 18x11 +22 with 305/30R18 Toyo Proxes R888R
Rear: Volk Racing TE37V 18x12 +15 with 335/30R18 track-focused compound
Increased track: +165mm front, +190mm rear with geometry corrected for street drivability
Ride height target: 60mm F/R on adjustable Öhlins coilovers tuned for grip-biased compliance
Widebody facets built around wheel travel and steering lock first; lips and chamfers set for tire containment at speed
Rear axle relocation requires revised suspension pick-up points, driveshaft length correction, and alignment range planning
Wing mounts tied into reinforced rear structure/haunches to carry downforce loads without panel fatigue
Underfloor and diffuser transitions kept smooth to avoid separation at street ride heights
Cooling ducting sealed and filtered to remain street-usable in mist, dust, and debris

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1990 Mercury Cougar XR7
Different origins. Sacred Cars

1970 Chevrolet Chevelle SS 454
Continue the exhibitionTime Attack Everything: Vol. 2We just cranked the time attack dial all the way to eleven.Build 2 of 6↗