Dam, just Dam
The holes in the first block are like the 383 A-body holes, BUT if it's an RB it's likely a late motor home block. This is a late 440 in a class A.![20160530_115606[1].jpg](https://www.forabodiesonly.com/mopar/attachments/20160530_115606-1-jpg.1715395016/ "20160530_115606[1].jpg")
The holes in the first block are like the 383 A-body holes, BUT if it's an RB it's likely a late motor home block. This is a late 440 in a class A.
