whats up yall, so im thinkin im gonna start out with a eg with a d16 so i can get it cheap. what am i gonna have to do when i throw a b18 in it. im mainly worried about if it mounts up without having to weld, and if im gonna need a diff ecu, which one do i need.? you can elaborate on what else im gonna have to do if youd like too. and another question... what is the difference between d and b series is it just the head or is it the block too?