GM A-body Rear window rust repair

[tellyv]

The best tool for this job is a shrinker/ strecher a couple of companys make them there not cheap but its the best tool for making the contours you can bend a 1" 90 degree in some sheetmetal and by shrinking or strechting you can make almost any dog leg or window channel its on of my most used tools in my shop. Eastwood sells them and probably has books or info or google ron covell he's the best and sells tools and has books etc. www.covell.biz

[V8TV]

We're about to repair this part on our '71 Olds... we're waiting for the car to come back from the blaster to see how much we need to repair. On the Olds, it is an easy panel to replace from a rust-free car if the damage is too extensive to fix.

[SteveMcqueenRules]

thanks for all the info guys. I thought a stretcher shrinker would be perfect for this job but don't know if it would be wise to buy them for just this job.
The drain tubes is a great idea and one I thought about doing after putting a nice coating of POR-15 along the channel.
Here is a pic of the damage luckily it is constrained to just the areas covered by rubber and doesn't extend into more visible or harder to replace areas.