I'm running the 26" length Smithys on my 53 1/2 ton with Fenton headers and original 216 engine. Smithys are available in 22, 26, and 30 inch case lengths. They are all 3 1/2 inch case diameter with 2" inlet and outlet. Summit racing has them as does Reds in California. This topic has been batted around several times in past years and it always boils down to personal preference. I love mine, but my neighbors would probably disagree.
