All Atlas 2 rail cars use body mounted couplers. Pretty sure the adjustocoupler is identical to what came on the 2 rail cars. The mounting boxes are totally different though. These couplers mate fine with a Kadee. Just can't remember if they mate with a coil coupler. I want to say they don't. Atlas a few years ago came out with a more Kadee looking style coupler. They never upgraded the adjustacouplers as far as I know. What I don't know is if the newer style Atlas couplers can be placed in the adjustacouplers box. This may be a way to make a transition car.
My forty foot cars seem to navigate my 072 to 042 curved Ross turnouts without an issues. I know it's only a short curve but with body mounted couplers. The wheels track fine as well as the coupler swing. Where it's close is the actual car bodies when backing up. You may want to invest in a set of Kadee's and try body mounting. Before you assemble them. File the coupler box so that it has a notch. This will allow the coupler more swing. Going forward. I think you will be fine as the centering spring is soft enough to allow the couplers to actually stretch out and lengthen a bit. Backing up may be your only issue.
The 805 Kadee's mate fine with coil couplers. Although for some reason my latest MTH purchases they won't stay coupled.
If you can get away with body mounting the couplers. That's the way to go. Once you go to a bigger layout you will be glad you did. Much easier to maintain the proper height is another plus.
