So not to long ago picked up o1 bullitt... Looking to see what mods are worth my.time with the bullitt what people have done and got results so far car has bbk x pipe magna flow exhuast fipk k&n.....what are my benifits with allum. Drive shaft underdrive pullys planning on going bolt on with spray whats a good build plan thanks

 

Pulleys, throttle body, if you go spray I wouldn't do more then a 100 shot with a stock bottom end, and if you go that way youll need to upgrade your mass air sensor / fuel injectors , ...etc

 

I would go with a better intake and tune, alum drive shaft is good for freeing up about 12 hp, headers and high flow cats are a good thing and rear gears will get a little pep in your step for sure

 

Going with 4:1b sct tuner bbk off road x pipe with bbk shortys allum drive shaft steeda pullys