Earl -- The truck sideframes I used are from Precision Scale HO 4-Wheel high speed Commonwealth trucks, swing motion, 7'-0" wheel base, for express cars, pair, $26.50. These scale out to a 5-foot wheelbase in S. It's a steep price to pay when you consider that I discarded the wheelsets, bolster, and spring plank, but hey -- I sold the original PRR trucks for $35, so I made money on the deal.
Go to: http://www.precisionscaleco.com/ and select HO, then "trucks." Look for a style and wheelbase that suits your preference. Dick Karnes
