ok so im almost finish putting the the 83 back into the car but came across some beehive problems. The motor I'm swapping in is FMOC where as my 84 that i just pulled out was the beehive. I ordered new lines from mazdatrix for the FMOC and a new 79-82 style radiator from mazdatrix but my problem is what do i do with the water line on the firewall that went to the beehive??? Also does Mazdatrix's radiator have the proper holes to mount the FMOC??? thanks guys been searching the archives for a while.

 

You still need one end of that nipple for the heater hose. So cap off the other one with a heater hose cap from the Auto parts store.

If the radiator is a "Stock" replacement then it will have the holes for the mounts that secure the oil cooler. Why don't you just call Mazdatrix and ask them?

By the way 83 models were Beehive, not FMOC.