[Fxstcustom]

I have a 66 Velle SS convert
I need new exhaust header back
Anyone know if a x- pipe will fit in 66? I have a 700r4 trans
If x will not fit will H ? Or am I stick with direct duals all the way back?

Also pipe size, I assume stick to 2.5". 3" is too large for 396. 350hp