Don:
I'll check the front engine mounts as you suggested. I'm going to hold off on the trannys internals for the time being because the PO had the tranny rebuilt. I've sorted out the column shift mechanism because I had problems last Summer with the car trying to go into 1st/reverse on a 2nd/3rd shift. I've also eliminated the vacuum shift mechanism because it was worn out/operating erractically/leaking vacuum, and, installed a conversion kit. The car now shifts great, but, occasionally jumps out of 3rd if I'm on the interstate and at speed. However, now, she'll go right back in 3rd gear, and, I don't have to coast off the road and fumble around with the gear shift to sort things out.
Regards:
Oldengineer