Advice on removing AC to remove exhaust manifold

I had a similar problem when doing my brothers exhaust ('04 CVPI). Even when really really tight the band clamps can still rotate. I used a universal type hanger with a regular exhaust clamp suspended from the crossmember just in front of the watts link. Just cleaned off 2 spots and welded 2 3/8 x 1" bolts to the crossmember. Another option is a self tapper or sheet metal screw through the clamp and slip joint to prevent rotation.
 
Pic of new bracket. I had the visible nuts down against the screw head then threaded the screws into the nuts behind the bracket. Then I tightened the nuts essentially lifting the bracket and pulling up on the mufflers.20201206_144728.jpg
 
Looks great. And I’m super glad your nuts are in the down position. (Much better that way [emoji1303])


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