Some LS9/T56 HELP please

[72LemansGT]

I'm working on a 1967 Camaro that I'm trying to put an LS9 with a Keisler magnum T56 in. I have run into a problem with the Keisler T56 not bolting up to the LS9. There is a gap of about 3/4" where the main shaft bottoms out on the back of the crank before it will mate with the T56. I found a guy that can build me a spacer but keisler said there isn't enough adjustment on their hydraulic set up to compensate for the spacer. I was hoping someone in this forum could help me trouble shoot this problem or has maybe done this swap before.