Yeah, so glad i called him. He helped me a bunch for sure and opened my eyes about the BM aluminum block. I'm fairly sure i will be ordering the KB block instead. I felt that the heads another gentleman was trying to sell me may be too large for my combo and Tim confirmed i was right. I'm gonna order the Stage v custom with 241cc port and 471cfm flow for my 572 street/strip deal next week. I will be getting the CP pistons from him as well and might have him spec the cam for the combo too.