Thanks guys! My immediate plans for the Chally have been to get it roadworthy again (which I've done) and then tend to the cosmetics and electrics. I've been told the WSS models are somewhat rare, especially with the color & interior mine has, so I'll keep those aspects stock. The engine & trans are stock & original, and they run fine so I'm not messing with them right now. However, I do have both a spare 360 and a 440 lurking in my garage, so down the road I may have to bolt in some more power...
The Duster's in primer at the moment and so it isn't much to look at, but I'll post up a pic anyway. It was originally B5 blue with a white & black interior (w/ buckets & console), which is what I'm gonna put it back to. The '70 340 in it is .040" over, 11.3:1, with '71 "J" heads (ported & polished), a big cam, Mopar M1 single-plane, 650 double-pumper, Milodon gear drive, Mopar distributor with Accel coil (and the original '73 brain box!), and Hedman headers (poor fit) and dual 2.5" exhaust with flowmasters. The trans is a 727 w/ a 10" converter & shift kit, and an 8-1/4" rear with 3.21's. The lack of traction with this thing is ridiculous, so I'm looking to install a sure-grip & make some suspension tweaks. This one means a lot to me too, as it was my HS car, and my wife & I dated in it. I've been doing some work on it, but here's an old pic: