67' Fastback Rear Glass Channel Rust Repair

Any tips on a brake shrinker/stretcher combo? That sounds like the only way to do it properly.
I got a shrinker stretcher combo and a stand for about $200 at Harbor Freight a few years ago. The HF shrinker stretcher combo is only $159 now, but after a 20% HF coupon it would only be $127. Then you will need (or be better off with) a stand. They have one specifically for the shrinker stretcher combo, but I think one of their $50 bench grinder stands might work. I can't tell you how handy they are. You will find that friends will be asking you to fabricate parts for them.