I have a set of 1993 shorty headers on a 1993 5.0 FI 5spd in my 1970 f/b Mustang - everything is factory stock - even the 1970 motor mounts - the car has a/c, p/s and no p/b - I was able to use the factory 1993 shorty headers without mods on the passenger side but the driver side had to be cut at the collector area and re-positioned about an inch or so - I am cheap I guess - otherwise I could have bought a set of JBA shorty headers for nearly 400.00 that are supposed to fit a 302 without any mods.....