I really don't know why you preach LS7 lifters.....EVERY SINGLE 90* roller motor that GM has come out with in the last 14 years takes the same damn lifter....every single one.....if you don't believe me, look at the part numbers for a 96 Vortec 5.7, and then look at the numbers for an 05 SC 3800. Sometimes you can score a good set on ebay cheaper because they aren't "LS7" lifters.