Any guidance on my 1970 Duster plans

Get the VIN number off of that TA block and post it up on www.forebodiesonly.com and https://forum.e-bodies.org a decent chance that somebody might be trying to find that block to match up with their vehicle, this brings extra money. Either way, I would either sell it to a restorer or trade it for a built 408 stroker motor. Tuning the carbs on a six pack is not exactly fun, so you'll be doing yourself and another restoration a favor.