Some listings on Ebay for parts.

16197427 Connector with pigtails....

I've made computer adapters ('7747 TBI computer to '7427 TBI computer), see link: http://www.gearhead-efi.com/Fuel-Injection/showthread.php?1426-1227747-to-16197427-Adapter-Plug

This plug-n-play...

There are numerous options to convert a 700R4 to a 4L80E!

Possibly the option of using the 16197427 as a standalone 4l80E controller is worth thinking about? Using the 16197427 as a standalone...