Which ignition conversion are you using?

I put an MSD E-CURVE dist in my 67 Cuda and have been struggling with windshield wiper motor clearance from the get go. Part of the problem was when I upgraded the old worn out motor mounts with new poly ones from schumacher. Solved that one by switching to a stock GM cap that was lower than MSD. Than I decided to upgrade the tranny mount. Same problem again!Exempt, I'm out of options. I don't know of any manufacturers tha make a shallower cap for that distributor. probably have to find a smaller windsheild wiper motor and adapt.