The clutch style has removeable thrust buttons.. You have the cone style with the trust block. I am not sure if you can just remove it and run without it...
Hate to say it but the cone style aren't known for high hp longevity. But if you are gonna make this setup work I'm thinking you're best off machining the axles down to the correct length. I'm in the same process right now , and I see theres another thread about it, But hes in my boat with the thrust BUTTON deal..
What I'd like to know is if you want the axles to be very close, or very far from the thrust area...