Busa's come with sequential trannys. What you need is a beefy chain, sprockets to match, a solid center axle and two equal CV axles. May not be that strong, but I think it would even out the weight distribution. 50/50 baby.
I am sure you can source most of the parts from busa drag bike suppliers.
__________________
“Faster, faster, faster, until the thrill of speed overcomes the fear of death...”
– Hunter Thompson