yea just get some help from a buddy...you have to jack up the motor about 6 inches to get the headers on...the prochamber shouldnt be too bad, just dont break the bolts and it shouldnt take more than a day

 

prochamber=easy
lt's=time consuming pita!
its not hard, and reguardless of what people tell you you do not have to remove the k-member to do this. simply lift the engine a little. that combined with muscling the engine side to side a little will open up plenty of room unless you have giant *** hands. just be patient and dont forget your red rtv to prevent exhaust leaks. good luck.

 

Make sure you get the 02 exten's if not you wont be able to hook up your o2 wires!

Make sure your combo for your headers and x pipe are good, some headers are weld on to, or a weird connecting end.

 

let me kno how it goes im getting mac lts and the h pipe with high flow cats from a private seller (only $550 and theirbrand new)

 

Thanks for all the help guys i will let you know when it is all complete. i dont even know when we are going to start it.

 

i literally just finished a long tube gasket change today, took 3 days of sorta of solid work in my driveway...dropped the k-member, only way to do it properly. There is and awsome guide on this, i followed it and everything went very smooth-heres the link, look over it a few times and good luck!!
http://www.fnsweet.com/garage/lt_install/index.shtml

*****What 99 Gt said about jacking the motor up 6in...I would very highly not suggest this approach...the first time i did this header install this is how i did it and a month later it was leaking. It is impossible to torqe the bolts down properly and this method as far as im concerned is harder then dropping the k-member. Just jacking the motor up was terribly hard and time consuming. Not to rip on 99 gt, just from experience doing it both ways.

 

alittle easier if you pull out the inner fender-well too. a little more room