What are you guys doing for an overdrive setup?

Hey 1GTMOPAR, I also went with a 200-4R from Extreme Automatics. I haven't received it yet, but the build is the same - used the Reid bellhousing.
Something different is Lonnie from Extreme Automatics is supplying everything, trans, bellhousing and he's also building the converter. He wanted all of the specs for my Dart including engine and cam specs so he could build the lock-up converter specifically for my application. He said it will have 3000 rpm stall.
Oh, and I had Lonnie build mine as a reverse-pattern, full manual shift so it cost a bit more but I won't have to mess with a TV cable and the proper adjustment.
As said earlier, the 200-4R has a .67 overdrive. I'm going with 4.30 rear gears which will give me a 2.88 final drive when locked-up on the freeway and the initial launch ought to be outstanding.
Best of both worlds! It's gonna be a fun driver.
Oh yeah, check out the rear trans mount now being built by US Car Tool specifically for this application. This will make it so much easier to modify the rear torsion bar crossmember...

http://store.uscartool.com/67-75-A-Body-GM2004R-Cross-Member-Kit_p_107.html



this the bell housing? is there a special flexplate that has to be purchased too?
http://www.reidracing.biz/transmission-products/bellhousings/small-block-mopar-bellhousing