I'm going for a budget build on my 91' 4.3l v6 non vortec, I found some nice headers on Ebay but it says they're for 95' and up, will they fit my older model 4.3? Thank you to any help

Hey everyone, I just joined this forum and am in need of some ideas. A few months back I managed to get my hands on a "barn find" 1997 GMC Sonoma SLT stepside that somebody has installed a smallblock chev 400ci v8 into with an aftermarket 3 speed transmission (its a 'transco' if anybody has...

I bought a 2000 zr2 awhile back and I want to v8 swap it I want to do either a 5.7 vortec or a 5.3 ls i know I need engine mounts headers and oil pan but what else do I need? Where do I find everything to do the swap? and how much will it cost?