Targa top bolts

I have an 89 supra with a targa top but the guy that had it befor me striped two of the bolts to take it off. Dose any one know what to do to get it off.

He stripped the allen wrench part? The threads are ok? If that's the case just go to sears if you have one, and find the "stripped bolt/nut remover". Real easy to use with a drill and it should pull it right out. You can still get the bolts/nuts for the targa from toyota if you find the part number, if not just get some from a junkyard MKIII.