it seems there are small pinholes in the passenger can right at the coupler
There are 2 holes in each ex. can pipe that serve as weep holes about in the area you describe. Sure its not them?
If not, do you need the right or left exhaust can ?
I have a good left exhaust can from an '88 - (pre 94 style with brushed aluminum finish) - NON baffelectomized. No dents. 7 out of 10 cosmetically. $40 plus shipping.
I also have a couple sets of header / crossover assemblies if the other sources don't work out.
Can is dirty in pics - it actually looks nicer than that.
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