Yea all headers take same amount of time. took me about 11 hrs. install is a breeze though, removing rusted parts is a PITA! also had trouble with getting that rear header in through the firewall. I rocked the motor forward and had to bend the flex pipe a bit to ssqueeze thru. totally worth it though! make sure you take your time and do it right the first time. I installed speed daddy headers. No problems at all. had them a few months. Good luck!

 

Oh yea, id honestly look into the tstat housing to be 100 percent. it's always fun discovering things about your car on your own imo

 

im sticking to the 3.4 for the pulley, where can i find cheaper headers? the only ones i see are in the 700-800 dollar range

 

Ebay speed daddy headers

 

just got done playing with my monte after 3.4 pulley swap...wow what a difference lol did not tune yet though. thinking of adding a throttle body spacer, high velocity l67 stage 2 throttle body and getting rid of that horrible ubend! although no shop around here knows how to make that work because apparently my flex pipe from my headers makes it a very tight space to work with. anyway definitely worth it to drop pulley size if you have supporting mods!