After reading all the horror stories on here about the difficulty of changing spark plugs on 96 lt1 I was worried about doing. But finally started ..Drivers side about 45 minutes passenger side about 3 hrs removed the drivers side cat and got 4=6=8= quick enough #2 that's another story but didn't have to remove anything else Well now I know

 

get a set of headers. With my headers, I get frustrated if I can't finish the job in 30 minutes.

 

#2 is easier to access by removing the alternator.