Again, thanks for the expertise. After I posted this, I found a complete bellhousing, linkage, and OD four speed setup out of an '84 D-150. For $40, I'll take the risk and flip the cast bellhousing..
84 Dodge 4 speed
http://harrisburg.craigslist.org/pts/5383529668.html
I get "standard" transmission, what I meant was, who orders a "performance" 73 Challenger with (albeit a detuned) 340, and skimps on the extra gear. Skimp on the AC, FM, 8 track, Rallye package, fancy seats, etc.. I can see. Skimp on driveability? in a 340 Challenger? I've had three speeds in my trucks, i liked its legs.. I'd want the four speed in my muscle car.
Man, ever since I fell into this 340, I've been scouring the internet for parts to put on it, and cars to put it in. Which then leads me down the dark path of shopping for my other small blocks.. Forget the Valiant seats, or the rust coming through in my otherwise clean truck.. or the entire body on the Valiant. Forget juicing up that 225, screw fixing my porch, to hell with nights out with the wife.. Instead, justify spending money on the idea of a motor (and my 318s) that has a baseball sized hole in one of its cylinders and the transmission I want behind it.. Could be worse I s'pose.