OK, I'm dumb, need help

Appreciate the discussion. Much of what I'm thinking about hasn't been done before, and is why I have opened this thread. Maybe I'm just crazy. I like the modern Tremec. With it I get a lower 1st gear and an overdrive. This means I can run a numerically lower rear axle ratio (like 3.23 or lower) without sacrificing acceleration, and at the same time easy cruising on the freeway. At this point, my understanding is that my belhousing can be modified to accept the Tremec. Weld-in kits for front suspension and rear coil-overs are currently not available, so was assuming that these could be modified for my application. My new concern from this thread is wether or not I can put enough clutch behind this combo. Thanks for the input.