Well, sort of an update to the vibration dilemma... took it out again today, definitely notice more of a vibration under accelleration or load, let off the gas and it nearly disappears... pull it in neutral and the vibration also diminishes significantly, if not entirely. I'd say its definitely not the tires, most likely in the driveshaft or universals... I guess I will take out the shaft and see if i can find a place that can balance it, i heard the driveshaft shop in town doesn't do that (go figure) but that a semi-local machine shop does. In an unrelated "event", I snapped off my throttle cable right in front of my buddy's house... He egged me on into gagging on the throttle a little, and when i did, the Lokar cable pulled right out of the clip at the carb end. The return springs did their job, but I've decided that cabe is a pretty lousy design... did a band aid fix to get it home, but will be re-engineering that too I think.