I'v been on the Web, i'v looked at what i think is every post and thread that i could on the H.A.M.B.. What i'm asking is, What year does the separate intake/exhaust end for the 230 and 250, because i'v still yet to determine what size the engine is. It's in a 64 panel, (stock), and from what i'v gathered the 250 was more at home in the pass. cars for the early 60's and the 230 was used more so in the truck line , or am i wrong about this? I also see that it can be determined by the head casting which i'm no waiting to get off work and go home to test this theory. Thanks in advance for advice.