Move the greenhouse back further by about 12", mount the engine further back 12". Keep the overhangs tight, but a long hood is a classic shape in an FR car.

I like how the designers get to think about aerodynamics, it's obvious in the care you put into the diffusers in the rear, which would definitely decrease lift. I imagine also that there is underbody aero in place here too.

The Hemi is a decent engine, but it's overweight for its power output. If I were free to imagine, in its place would be a DOHC 4.0L aluminum V8 with dry sump. 94mm bore, 72mm stroke - oversquare, revving to 9200rpm.