No, have not an Interplod but my 74 Mk2, I do run a Plodian seat albeit with a inch or two shaved off the front. I got it in sad shape so reglassed
and new pad and cover.
I was just wondering about the rims considering the additional weight
they carried. Not to mention Plodian Posteriors...wondering if they went for a WM3 on the after section. In fact, I have a WM3-19 which just shows
my idiocy in not going 18 inch. Think of the tyre choices....