TKO 500 for a Mod Motor

I already have the TKO 500 transmission but it has a windsor-style bellhousing and I need one for a modular motor.  I also need to do a little research on a new clutch. provides a service for the TKO where they can remedy its poor high-rpm shift characteristics.  You need to send them a few parts from your transmission (gear cones for 2nd,3rd,4th) and they modify them in-house.  I’m considering this service, depending on how long it takes to get the parts back.