Let's see....

Cowl shake... gone because of chassis stiffening and roll cage. Car is far and away stiffer than a stock coupe.

weight.... car is much lighter than stock even now because IRS is gone, racing seats, and rear seat is gone. Also much more balanced because of me moving stuff around.

aero... its a ford so not their thing anyway except for the Ford GT. Though in reality aero really doesn't suffer that much as long as the top is up.

noise... can't hear anything above the engine noise and exhaust anyway. Neither can anyone else around me.

handling... car is setup for road racing and has the suspension off the iron man series racecars. Car can hang with Porsche's in the corners now and has. Also has much larger brakes (Baer 6 piston with 14" rotors front the rears to match up on 13" rotors) so they can't even get an advantage by braking later than me.

And then it can burn them and most anything else on the straights.