200R4 swap questions

Some of you followed my older thread about me needing an overdrive to bring my rpm range down in the final gear. I have a 318 moderately built and a Dana 60 with 4.10. What it all boils down to is 3200 rpm at 55 mph and 4000 rpm at 70 mph. That's bad enough on a 318, but I have a 408 Stroker on the engine stand waiting to go in and they don't like sustained high revs. I can't justify a Keisler that I really want. I was leaning toward Gear Vendors, but someone brought up a 200R4. I found a bell housing conversion kit. I have a friend who owns a transmission shop who can rebuild / build a used 200R4. My question has to do with the electronics portion. I know they went away from the TCC solenoid and used a computer command control unit to control the converter clutch after 82 or so. Does anyone know what kind of electronic headache I am in for or what I need? I like the gearing of this tranny and I think it is the way to go. A .64 final drive would be sweet!