69 Dart 4 door cruiser

I think you would be surprised at how much nicer an OD would be over just the straight 3.21. In fact, I would run the A500 with the 3.21. That’s basically what I run and really like it on the highway.

But if you are going to spend most of your time in the city, much less ROI.

That said, I would run the 998/3.21 combo. Then you can decide later on if you want to add the A500. Keeps it simple for now.