Looked up the Arcadia and Attica RR and it appears they show 2-8-0 and 4-6-0 locos, neither appear to have a Bellpaire firebox.
A shame, because Weaver made a nice 4-6-0, but it's a PRR w/Bellpaire, 2 on on ebay right now for $395.
Might want to look at the WbB 4-6-0, that's close to what you're looking for and I hear they're great, slow runners but don't know about front coupler, they're going for around $239 on ebay.
There's a Lionel 4-6-0 (6-11150, NYC) on ebay for $650 with Odyssey II control and Legacy Railsounds, and MTH 4-6-0 (30-4216-1, PRR) for $300 with PS3.
Seems to be plenty of 2-8-0s on ebay also.