N Scale Semi Trucks - Model Railroader Magazine

I did a quick search for N scale tractor trailer, and found a few things, from Shapeways, trainworx as some stuff. but it says "coming soon", any thing Walthers has is "sold out", which is the norm.

It just takes a lot of searching, and be prepared to pay.  No way around it.

Look for just tractors, look for just trailers.

What works against you is the glut of modelers that do the "transition period", wich dominates whats out there.

Happy searching.

Mike.