Stephen
This is going to be a long Post .... so sit back and study the photo's so you can understand why we did what we did.
First we'll start with a old saying I've taught many folks
"A switch controls a relay .... and a Relay controls a Load"
So here is the Fire wall of KMP259 so you can see the Relays and another fuse distribution center. to power the loads on the Relays, Fuel Pumps, Differential Pumps and Transmission Pump. Also you can see the Transmission pump mounted on the side of the Tunnel behind the Bell Housing.
Here is the Top of the TKO 600.... You'll see that we installed a 90*degree fitting in the vent area for the Transmission so we can use a Aeroquip hose up to the Catch Can. Also you can see the second Plate for the shifter we removed and welded a 1/2" NPT Bung in the plate for filling the Transmission from the top.