if rules allow you should run a solid coupler and not a converter, with a bypass valve! but if you must run a converter you need one that stalls to the rpm you need coming up off the corner so you can hit your max rpms at end of straightaways! youll need a trans man that will work with you to dial it in like bushsore racing trans and still gonna be giving up alot to a standerd trans and direct drive like the burts and brinns! most folks that try it go back to manual or direct drives and cuss the money thay lost on the automatics, but good luck with it! on a side note, any body need a turbo350 set up by bushore for dirt racing hit me up in a pm!