i have a 02 gt with 150,000 miles,is it worth swapping? how hard is the work? Ive never done heads, but from what Ive read its all bolt on. when it says 90 foot pounds + 90* does that mean torque to 90. then turn the wrench 90 degrees?
pretty much i feel confident in doing all the work except the heads...

i don't see the point in having two mufflers.. can i cut one out of the system and run a 2.5 cat-back into a single muffler?