Made a Meager amount of progress. Bought some LM-2907 chips to rebuild the tach circuit, then decided to try a cheap digi tach on ebay. Just over 11 bucks, free shipping!!
Got the Mopar reluctor "Roughed in" still have to do a little work to make that fit. That will be the new tach trigger
Got a used medical vacuum pump (thrift store, of course) mounted, picked up some new 4 conductor wire for the motor wiring and got the motor re--mounted
Mounted the old, empty chassis to measure up so I can mod if for mounting the new digi tach