my main goal in the long run would be to PROPERLY get the engine tuned up and taken care of. but before i get that far i wanted to see how it drives and shifts and handles. and i wanted to make sure the engine runs well before i totally tear everything apart. my best guess is if the engine is a strong runner in bad shape it'll be a real strong runner in good shape. i did get everything working well enough to go for a few test runs around town (much thanks to all the help on this site!). it shifts great, stops on a dime, no more backfiring, the suspension is real smooth, it goes straight with very little play in the steering. i just wanted to be able to take a test drive or two to see if it would be worth even fixing it up. i just didn't want to put too much into it because its a 79 2wd d150 and i don't think the resale value is very high. only paid 500 for it though. thanks again to everyone for the advice and suggestions.