Replacement under frames and floor for AHM ho boxcars?

[sailormatlac]

Howdy, I found a quick & easy replacement for the AHM underframes. They are the Bachmann HO underframes. They fit with a little X-Acto cutting. The frames look identical except for the coupler pockets, I suspect the Bachmann is using an updated version of the original molds. I have now replaced the floors on two AHM helium cars and two refrigerates cars (all 40ft). They are now freely rolling with new trucks and couplers. I'm using this as a stop gap solution until I can find a better detailed match and until I get a chance to do some serious finger tip slicing re-detailing of the cars. I would like to finding a suitable fish belly frame for the Helium cars. Hope this is useful - Dave

Accurail makes fishbelly underframes. I'm not sure if it fits your prototype, but who knows!

Matt