I have a 1994 mustang want to put 400 horses can it still be my daily driver and pass smog?
A 302 pushing 400 hp isn't a big deal.. Rebuild the bottom end & add a blower. If you want, the 302 can be stroked to 347, which would make 400 hp even easier to get to. Then, further, the 302 can be replaced with a 351 W that is only a bit larger... The 351 can be stroked to 427 & run 500 horses on the engine & pump gas, no blower needed.