There are no two hole to two hole carb adapters in the Offenhauser catalog. I can find no evidence that we ever manufactured one. Usually hot rodders were going for larger carbs and we have many two hole to three and four hole adapters. I would look for a local shop that could either cut one out of billet or print one on a 3d printer. it shouldn’t be too hard to engineer one.
Thanks! Installing a 1409 on a 1953 Chevy 3100 pickup with 235 engine. The 1409 carb mounting plates are drilled and tapped for Rochester carbs. I’m going to be installing Carter W-1s. W-1s have a smaller mounting base. The holes on the W-1s do not match up with the 1409 mounting holes. Any suggestions?