Got a bit further this week . I bought an Eastwoods 135 mig welder which is 110 volt as I don't have 220 in my garage . Really surprised how well this thing works . Chassis shop would have charged me $500 at least and last time I had to take it back and have the mounts rewelded cause the didn't put the motor back far enough . Anyway: my old fastburn headed motor , th350 , 3500 TCI converter , block huggers , an HEI , and my Divinci gas carb . This motor had a touch of piston rattle on ethanol with 35 degrees of locked timing . It will be fine on gas with an advance curve . Leak down was good .