Best guess on 434" sbm
Comment bump: My opinion is camshaft performance will be the key to this combo. Some of the dyno results i've seen on these big rotators have the tq. curve nosing over in the 53/5500 rpm range. If it can stay flat upwards of 6k, i think you'll have a winner. I'm also thinking shift points around 6500 and trapping around 6800. I'm also assuming a rr tire diameter at a minimum of 31"s.
I know this is all speculation and i could be way off :D, but thanks for the opportunity to make some guesses. Good luck, can't wait til you get some passes in:thumrigh:.