Isn't the 2 speed a bigger disturb for a 6 pack air cleaner than a 3 speeds ?
From what I remember (which goes back 13 years ago when I ordered everything for this project) the 3-speed motor winds up interfering with the air cleaner base unless you notch it. Right now I have around 3/4" clearance from the rear edge of air cleaner base to the front edge of the 2 speed wiper motor. Plenty of room for it to fit!
Have you tried a prestolite 3 sp they are smaller than the 68 a-body 2 sp
No, I already have a new 2 speed mounted to the firewall. I'd rather not drive this thing in the rain anyways