[4dblnkldude]

So I'm getting closer to firing up the 400 in my 81 Trans Am. The question is... I removed the 77 intake and installed a 70, because I hate the look of the EGR bosses there. They don't need to be some why have them there. So I have a 77 throttle bracket with the kickdown bracket as well. The 70 has one hole to mount the bracket which is slightly more rearward than the 77 intake, but there is a "mountain" there which looks like it could be drilled and tapped to an extent. How much meat is there? Can I drill it 13/64 and tap it for a 1/4" bolt? I would rather not drill into the plenum. So the engine is a 73, intake a 70, 78 throttle bracket. The idea is to get the mounts in as close a spot as possible as the 77 intake I had on there. Or anybody got a different idea?