If you mean the one mounted in a plastic frame held by sheet metal screws, that is a single diaphragm pod. I'd leave it unless the dash was coming out for some other reason or I wanted everything finished at the same time. There are several pods that require the dash to be pulled or at least moved back.

__________________
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.