Thermostat housing.

Hi everyone, first time poster here. Im not a very experienced "mechanic" yet but i know my basics around the engine. Anyways ive been working on my 1990 4.0 ranger for a while just replacing with needs replacing, getting some experience before i go to school. I ran into a problem with stripped out bolt holes in the top of the engine where the thermostat housing bolts to. Im hoping someone could give me a some tips on how i could repair this? Possibly with use of the same bolts? Or do i beed to use new bolts?

Thanks