How do I pick a TC??

It’s got a good chop. Mechanic recently called it a “big cam”. Guy that built it claims 400hp and high 12s in 1/4. But I couldn’t get any faster than mid 14s. Swapped out the 3.23 with 4.10 and added headers. Also upgraded to the 750 dp since then. I’ll work on a video
Then I would go with something like a 3500-4200 and probably lean towards the 4200. You need to CALL a good converter company, Frank Lupo, Precision of New Hampton, PTC, whomever and tell them that's what you want but you want it tight because it's a street car. That way you can cruise around without converter slippage of the 1970s and still flash high when you do a launch against the converter. A good converter won't be 250 bucks, either. If you don't get into the 400-600 range, you're likely not getting a good one.