Well got all the bolts taken care of what a PIA! A buddy of mine who is a great welder and knows lots of tricks came over and helped me last night. The was 2 bolts that stuck out a bit we tried welding nuts to them but no go. So we drilled the one that was broke off flush and then put an acetelyne welding tip inside and got it red hot and let it cool hoping to shrink it . no go. So we drilled it a little bigger and more heat still no go. So we kept drilling and tried pickingout the threads made a little progress but not aa lot so we put a tap in it and kept working it. Finally the last 25% or so broke loose. So this morning I cut the old crossover apart to get the flange off it threaded a bolt in the hole centered it up best I could an used the holes as a drill guide to give me a center point. Basically ended up drilling and tapping like there was no old bolt in it. Seems to have decent threads without a lot of slop. Time will tell.