Pods are accessed on the 126 through the glove box and by pulling the panels on the transmission tunnel. There are long discussions about whether or how well the replacement diaphragms work. I've seen double pods with 1 of 2 diaphragms intact and the good one could be potentially used to repair another pod. I have no idea how long that would hold up given the age of the used diaphragm. You can have time or money. Take your pick.

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85SD 240K & stopped counting painted, putting bac together. 84SD 180,000. sold to a neighbor and member here but I forget his handle. The 84 is much improved from when I had it. 85TD beginning to repair to DD status. Lots of stuff to do.