Not the craziest of gains but if you buying bare heads, and planned on getting a valve job anyways this mod will get you what like 20 hp ? On a decent engine, what extra cost would be over buying 2.02" and getting a decent VJ ?
2.055 valves cost from 125.00 for valves like Liberty pro’s to around 200.00 for Ferrea. So if you are buying both intake and exhaust double that. Competition valve job is per shop. I’ve seen 250.00-350.00