4.1 Blocks: ending with 291

No doubt the rollers do a better job and I'd probably stay with something smaller like a 212 or possibly 218 roller for the street. Haven't been shopping for parts for some time, so could you tell me who carries the best hyd roller cam deals and/or who sells the parts? Guess no one has come up with a roller chain that doesn't have a bit of stretch.
 
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