[84fiero123]

standard trans. rarely go inside usually the clutch or hydrolic system. if you do need a new trany any chevy trany from any front wheel drive should work as long as it had the 2.5 attached to it.
check local yards they have a substitution book that will tell them what other trany will work in your car, but i really think your stumpjumper mechanic was the problem. try bleeding the clutch yourself, but first check around slave and resovour for signs of leaking if there is leekage around either of those it is them and not the clutch or trany.
to bleed the slave and hydrolic lines park the car up hill or jack up the front end, put a peace of clear hose on the bleeder nipple for the slave cylinder and run it down to the ground into a clear bottle, i like coffee bottles the large ones. open res. and fill it to the point of overflowing now open the bleeder valve on the slave. now watch for air bubles in the bottle and make sure the res. stays full. you are now gravity bleeding the system. run a pint or 2 threw this way and then close bleeder. the system should be clear of air and flushed of any old fluids. if that doesn't work.
take a stick and hold the clutch down to the floor, then mark slave arm and leave car like this over night, in the morning if the mark has moved you have a leak or a bad slave or master cyl.
if it doesnt move you need to get a new trany, sorry dude.