well I did my head swap when my motor was out. so it was easy for me. to do your with the motor in place isn't that hard the hardset part would be getting the exhaust manifolds out, but there is a lot to take off. Like intake throttle body plenum fuel rails injectors, timing cover primary timing chains ect... then would need to reasemble it so hey if your are a mechanic nd know what are your doing do the swap and while our ad it some headers on it weather it be long or short header that are choice. i prefer long tubed headers. then cams are a must to benifit more from the swap. port and polish if you can and full exhaust now you can greatly benifet from the the swap alone but to even get you higher headers cams would be great. But with our motors can't go high on lift sine our pistons are only dished to 10.5cc instead of the newer mustantgs at 17cc so good luck and if you need any help on anytrhing let me know
well i plan on goin to the track but keeping it streetable i was lookin for numbers around 400 hopefully and most likely FI and i just heard that if i do the pi head swap with fully ported heads i will loose bottom end torque
IMO id start with gears (3.73) ,short shifter (MGW), and a good cat-back (SLP) . Gears i think are the best bang for the buck. I recommend 3.73 as that is what i have. They are great for the track and run fine when u r just out driving. The shifter is the first thing i had done to my car and it'll prolly be the first mod i do to any car i own. Cat-back is just nice to have so you have a different sound coming from your car. Other than that enjoy ur ride and let us all know how it goes.