I'm not sure what you want to do-are you going to convert to fuel injection? That's the only throttle body application you will find. If that's your goal, there is a lot of information available online to help with that conversion. One of the easiest is using a GM throttle body injection system off of an 80s S-10 with the 2.8l v6. You can use the entire set up minus the emissions crap, with either the stock ECU or use the MegaSquirt I or II to completely control fuel injection and ignition, or only ignition, or only fuel injection. This link takes you to the DYI autotuning website that has lots of great information, and a build thread where they swap a TBI system onto a 70s Nova with a stock 350. All of the processes and techniques translated perfectly to our carbed 2.6l motors.
https://www.diyautotune.com/tech_articl ... 1-nova.htmIt's a 3 part article, tons of good info. You can even go totally distributor-less using parts from a Ford EDIS4 system for about $75. Don't know if any of this is helpful-if not, sorry.