I put about 50,000 street miles on a couple of dykes equipped Hemis between 1980 and 2005. They are not unstreetable at all. The engines put out excellent power and didn't noticeably smoke. I would run them again in a heartbeat. How many miles is the customer going to put on this engine 100,000? I personally think proper valveseals and guide clearance is more of an issue than running dykes rings on a Street Hemi.

Sheldon