Well i got a free b20 block with some fucked up pistons and some scratches on the clyinder wall so im gonna get the block overbored to a 84.5 or maybe even 85 which ever safe with the stock sleeves...i know the b20 sleeves are not the strong but remember this setup is basicly a stock NA b20 with some high comp pistons, street camshafts (either some 403s or some exospeed regrinds), Skunk2 IM and the regular bolt-ons. For my trans setup im getting a hydro GSR trans with exedy oem clutch and a ITR flywheel. So wutcha guys think about the stock sleeves being bored out a little...is it safe? and wutcha guys think about the CTR N1 pulley? my goals are to make around 150-160whp/130-145wtq...you think its possible with those mods?