Dear Joe;
Dont use the front side mounts, you mount it on the crossmember using 'early' mounts & the side mounts go where the stock ones were. They bolt to the front of the bell housing.
The transmission mount is just extra suport.
I've put several 55-62 engines in that way. You just have to drill the front plate & the cross member and use the early front mounts between them etc.
Good luck.
