408 Stroker Short Block Details: Blueprint Engines

Aero mods are going to be the next step. Seal up some frontal openings, add a air dam/splitter, lower the van, rake the windshield back some....

I'd use some riv-nuts to mount the 'West Coast' mirrors so you can unscrew them for passes.
All done with any more exterior mods, all engine and drivetrain related to get any further. Maybe lightweight disc on all fours, maybe!