i did two duel turbo cars one with a buick v6 4 inch and a big block 540 3 1/2 ex. i ran the Ex out the lower front fenders . and used a small glass pack mufflers in line cut the tips on a angle and oval it to me it look like a WWII plane the one had 4 inch ss steel and made the bottom part of the fender out of ss steel and had it buff this was done becaues the front end was glass