[Batman]

Contact Mikey at Rapid motorsports, he just put out some NASTY LS2 402 strokers. They are around $6000 but put down over 550 WHEEL horsepower and another that makes over 500 and idles at 900 RPM. I don't see any of your options running much less then $5000 anyway if you use good parts so decide what you want to do and what purpose the car is going to be for. If it is a street driver you are better off with displacement because you won't need as radical of a cam to make the same power as a high strung small bore. The LS2 is a very nice piece and costs less then a stroked LS1. Another thing to remember is if you aren't starting with a brand new block the LS1 can only be bored .010 over and then it needs a re-sleeve which costs big dollars. LS2 you are in the same boat but already have a 4.00" bore. For long term the LQ4/LQ9 block can be rebuilt more times then it's aluminum brother and costs 1/3 the price. There are alot of options and alot of things to consider but overall I'd say the LS2 is your best bet.