im gonna be running a low compression mmr 900 sb with vt 3 blower cams (.545/.545 lift, 238/242 @50, 115 lsa). Stock stroke/bore. Stock 2 valve heads for now, going to use kb2.6 and around 15 psi.
Maybe somebody can correct me but I think that Comp is the only ones making replacement valve springs. They're the "beehive" design and allow the higher lift without coil bind.