[dsraven]

if you are getting antsie and wanna get going on your engine, you could load it up and take it to a reputable engine shop and get a quote on a rebuild/refresh or a line bore and crank/pulley extra keyway. there is no requirement to have the work done but you will at least know what that would cost you. mention the things your engine buddy has talked about, eg, cyl wall thickness. that way you know what you have compared to a rebuilt from a generic builder who is simply punching out engines as quickly as possible.