Don't buy a junk cheapo converter and you can have a 3500 stall and a tight runner at part throttle.
It's not the 70-80's anymore!
Depending on what you want to do with the car, I'd have no issue with a 3500 converter in that car. I run tight 8' units on the street and they don't drive like a marshmellow.
We put a Hughes 2500 converter behind a 360 with a XE268H and I thought it was still shy of what it should have had... that's what the owners wanted. I think they were unhappy with it but it was better than the POS stock unit. The car did get 20mpg on the freeway. :)