Best I can gather from way too much research is that you are correct. Standard cab '83-85 720.
A few ruminations I'd be curious to hear people's input on...
I keep trying to convince myself that since the car is so "close" to a runner that I'd be satisfied to put in an L20b/5spd and be happy with it as is. But the more I think about it, the more I think I should build it the way I
really want it, even if it's more labor and takes a little longer. So...
1. Thinking I will play a little shell game and use the L16SSS engine I was going to put in my 4dr 510 for this car, then save the L20b for the 510. The L16 will be a little more rev-happy, and fun for what I want to do with it, which brings me to...
2. I'm thinking full blown race car.
Stuck in the 70s...