I could be wrong but I doubt you'll find one.
I bought a Hurst '57 Chevy passenger car shifter for my '65 C10 that has an M-21 Muncie car transmission. The Hurst shifter still didn't clear the seat.
Your best economical options are likely going to be to either go with bucket seats or make your own shifter handle. You can either heat and bend a stock shifter or make one from scratch.
I built a shifter for my roadster pickup by using some round bar, bending it to the correct configuration, then using a die to cut threads for the shifter knob. I then cut off the old shifter and welded the new one to the stub sticking out of the trans.
Hope that helps... good luck to ya.
Here's a link to what the previous owner of my truck did to the shifter to clear the seat. The darn thing weighed about 5 pounds.... it was the first thing I took off the truck.
http://i645.photobucket.com/albums/...rchased%20Aug%202008/65ShortStepSeat.jpg
