I've been looking at the 8536 distributors...just googled the part number. Is there more than one version???
I ask that b/c the ones I've seen have a cap that looks no bigger than what's on my current MSD 8546 pro billet distributor.
I've seen pics of one w/ a big cap, but it appears to have the cap-a-dapt on it w/ the big ford cap.

See pics...the first 2 don't appear to be any larger, but I may be wrong. The 3rd looks like it has the big ford cap (cap-a-dapt)