Distributor

Can anyone tell me the installed height of the MOPAR Electronic Distributor on an LA engine from the block to the top of the plug wire towers on the cap? I have an MSD "ready-to-run" Pro-billet distributor but it's too tall and hits the 3 speed wiper motor. I'm running a 408 stroker in a 67 Barracuda FB with a Magnum Force K-member. Also, anyone know if a 2 speed wiper motor can be adapted to my application and if so, what part number(s)?