Ok im geting ready to build my b20b from my crx. Im thinking of 11:1-11.5:1 compresion some eagle rods since i shouldnt have to wory about them breaking since i wont be reving to 90 bizilion R's. might just spring for some crowers. i have a gude p&p head now with stock parts Im going to go with crower springs and retainers and mostlikely some supertech valves. i cant decide on a set of 403s or 404s. build b20b 11.0:1-11.5:1 eagle rods crower springs and retainers crower 403 or 404s supertech valves and allready have a gude p&p head Questions do you think that i sould sleve the block or use a blockguard. I dont want to use a block guard i would like to keep the stock block if you all think that i will be allright. also i cant decide on a set of cams what is every ones opnion on cams and thw block will i be fine or should i do some thing about it.