is there any type of upgraded motor mounts other than the stock or ron morris mounts for a 66? i think my motor will rip apart the stock ones but the ron morris ones cause vibration.

 

Lakewood Muscle Mounts. They're a stock type rubberized mount, but much heavier duty. That's what I'm using, they work well, a bit tight trying to get the engine in and they still transmit some vibration, but not like solid mounts.

 

I just bought some Suspension Energy motor mounts. They look to be very good quality, but have not installed them yet.

 

I fought that battle for a while with my old set up.
Make sure your trans mount is new or in good shape.
I took a set of new stock rubber ones drilled a 3/8" hole thru them then ran a nut bolts and washers thru that.
Had to leave a lil slack in for the rubber to work. They worked great and going to re-use them on another car.