Art Morrison Crossmember & Tranny Mount?

[fireboy68]

I am building a 68 camaro with an Art Morrison front subframe. I have an LS3 with a Tremec T-56 tranmission in the car. Is there a special transmission mount for the T56? The stock chevy mount is too short, the holes wont line up to the transmission, and when i set it all in the car the transmission mount's holes dont line up with the crossmember. Make sense? Anyone have this problem?

Thanks for any input!
Jeremy