What's the fascination with the LS bottom end? They yield, what, 90cc's more displacement, but without the main support or engineering for the 8krpms? I can see sleeving the stock block with a bigger bore and putting in a nice forged piston, but LS? Please help me out, no shit.
BTW
For this guy, I'd say the piston replacement and a decent FI setup and tuning would be the best bet. Am I just a clueless idiot?