Anybody running a 700R4 with the 258? What are you doing for TV linkage?

I'm new to the world of automatics and I'm going to put a 700R4 behind the 258 in my 79 CJ7. I have a TH400 currently. I also have the Carter stock carb, and I believe it is a 2bbl. I have a Weber in the basement waiting to go on. The shop I'm getting the 700R4 from doesn't have a TV linkage for either of these carbs and is going to set up a universal TV linkage to get it to work. That means I have to definitely make sure the Weber will work for me (because I can't completely isolate what Carter it is that I have, so I winged it on the Weber I ordered online - I'm on the 2nd attempt), then get it to work, and send pictures to the shop. Or even send them the carb.

Just wondering if there's anything out there specifically made for my configuration.