Did a aqick search and didn't find anything specifically for first generation. I got my tax refund and it has "new crate engine" marked all over it. I'm looking at the crate engines from chevy, specifically the 383, the ZZ4 350, and the HO 350. These would all be mated to a SM 465. I don't plan on doing too much offroading, and it will mainly be highway/back road driving. As always looking for the best combo of smooth power delivery and reliability. Any suggestions or experience with any of these? Appreciate any help.