I have a redtop in my car , so i'am sr'ed as well. After swapping one in , you just realise that it's just another engine. I know the LS1 is lighter then a VG30DE , but are your weights including accessories as well ( i see that you have auto/manual listed) so that must include the transmission. 350hp out of a engine that weighs about as much as a 2.0L 4banger is just damn awesome.