Without reading back through everything, it may be easier to just buy the stainless steel bolts from ZZP ZZ Performance SSIC BoltsOriginally Posted by Bio248
along with your GM gaskets.
Other than that, you will likely have to just pull your bolts and add an inch to what ever they are, like you mentioned earlier. There is more than one size bolt, a couple are longer than the others.iirc
I could measure the length of my Stage 2 bolts for you and you could subtract the difference (1.25in iirc), but I have no way to tell you what the thread size is.
