explorer 8.8 in an a-body: experience needed

I have one in the process of being put in, one side needs to be narrowed and new spring perches welded on. After being narrowed it will be a little narrower than a 8.25. I dont know how much power they can stand up to but I figure if all of the kids with mustangs in this area can abuse the crap out of them they should be tough enough for me