Hello all, been awhile since i posted but thanks to you all, I have a nice 2 lane layout going and am getting onto detailing it and working with the scenery, so far so good! Anyhow, since the bug has bitten me, I happened to go to to a local church sale and bought a bucket of n scale stuff, cars, engines, track and a bunch of other stuff, got it for $10.00, I thought it was not a bad deal. Got an Atlas SD-7, a Bessemer and Lake Erie engine in the mix, since I have 2 of these already, I was wondering if anyone knew what other Atlas engine shells will fit this? What other info would I need to find out? I appreciate any help and thank you.