i m a dealer with TSR in NH
http://www.tsr-racing.com/ if you want to call them Carl the owner or his son Cris < who knows me as ( joey bag of donuts ) < its a funny and long story if you get him -- but they will make you a converter for your combo < not cheap but high quality -- Carl is the author of two racing transmission bibles the powerglide and the torque flight, every trans shop on the planet uses his racing tricks for their builds -- PM me if you like -- jz