Are there any pros or cons to running an older gen 22r vs later? I found a rebuilt 22r out of an 83 on craigslist and the guy wants to line up a buyer so they can hear it run before it is pulled. Fresh rebuild, tune up and valve adjustment. Sounds like a screamin deal for the price. Just wondering the upside or downside to running an older gen engine if there are any. Any insight would be helpful.