Fbod, he is installing a hot air motor (and harness), into an 86 NA regal... The factory regal has virtually the same fuse panel/block as the hot air car, with only slight differences in fuse options, depending on the options of your regal... You should be able to connect... Vacuum brakes are awesome, I had them in all my regals, and in my LC2 swapped car (87 limited)... i wish I had them still... The hot air im working on is a factory original 84 T, with the hydroboost brakes, which I have been told often are a real good system... i liked the vacuum system personally...
Good luck!!!