The body is a bronz streamlined economy hudson loco body. I first tried a old brass mountain frame. I tried it as a mountain and it didn't work out. I removed a driver and tried it as a pacific or hudson. The brass frame just didn't work out. I went to the Mantua Pacific frame and drive and had some sucess here. I have a frame in the body and I tried different tenders with it. The two that seam the best was the Riverrossi NYC Henrey Driffus streamlined tender and a old A.C. Gilbert diecast hudson tender. I am going with the gilbert. On the mantuas drive I replaced the mantua lead and trailing trucks with brass ones. This is where I am now.