thing about a lq4 is its just 322hp..i was going to buy a 5.3 for my truck but got talked into the lq9 at 345hp....most later model 5.3s are over 300hp and with minimal expense can do more than the lq4....everybody gets hung up on a 6.0 for some reason...I bought the ls3 because it was cheaper to buy it at 424hp than building a 5.3 to that level...
heck hot rod mag had a 4.8 turning over 1200hp...
http://www.hotrod.com/articles/hrdp-...g-bang-theory/