I have discovered that the best bolt to use is the upper plenum bolts , they are chrome plated and will not rust in place, they are the correct length thread and look good on the engine. Just make sure you have a good 10mm 12point socket to install them. Also use high temp never-sieze on the threads. Also they are case hardened and very hard to break. I have them on the last three 3.4 engines and have had no problem with them. Had to remove a set after a year,came right out. They are easy to get, from any V-6 Fiero . There are 10 on every plenum and you only need four. aerodon!!
