Will GM 200r4 work with factory floor shift location?

That's what I also heard, "get a good quality converter" as they are more efficient. I'm sure JBC bought a real good one and he also has a large cooler with larger lines. I don't think he will have a heat problem. The main thrust of my comments was that you're not going to get the gas mileage that you planned on at highway speeds if your converter's stall speed is way above your cruising RPM. I wonder if the high stall converter manufacturers can tell you how much slippage you'll get at a particular RPM (below stall speed but at cruising speed). But of course for many people "it really doesn't matter"!! If you want to race the car then you need the high stall. Too bad they don't make a converter with a lock up feature on the stall...LOL!!

Treblig

Lockup high stalls are available for GM & FORD in diameters as small as 9.5 inches.