I'm in the same boat with my '65 cuda... I think the original mopar 4bbl part is #2465726Summit carries the offenhauser's that fit the
'64-'65 273 motors. I found three on their site: http://www.summitracing.com/
#5697
#6023-dp
#5488
Best of luck finding one used for a 64-65! If you find two cheap, I'll take one...
got one 125. plus the ride
Got a D4B or the part he listed?
I understood that the D4B and LD4B were two separate intakes, and that LD4B only fit on engines made in 66 or after, and the D4B fit on the mopar engines before 66, as they have different sized something or others. This is what I was told by another member but I may have things backwards?