Bump for helpful thread.
Sorry for bringing this thread back from the dead, but OP did you have to weld in these tips or clamp them in after you cut the old Borla tips off. I'm swapping my Bassani for Borla's with some tips in rough shape so I'm going to be taking the same route as you.
They are clamped on, you'll love these tops they're top notch.
Did the clamps come with the tips or if they didn't, where'd you pick them up?