^^ Sleeving isn't always the best option. The stock block is perfectly capable of 400 whp. (Probably quoted from Provocateur at some point)
I got my Eagle H-beams for $280 shipped, and 9.7:1 CP Pistons for $400 shipped in the HT market place. I think the seller was:
http://www.rogueusa.com/ And yes I still have yet to boost my fully built motor, school is fawking expensive!
Keep your eyes open, I've seen Wiseco and JE pistons as low as $300. I haven't seen CP's lower than $450 though. What kind of valvespring's are you looking at?