For The Detail Modeling Enthusiast
#F-67701-X DDA40X frame (modified Athearn) fits Bachmann DDA40X shell (trucks part #PT33226-8)
#F-31600-L GP 7 / 9 Ath Loco (frame weighted and machined for can motor)
#F-34500-L U25B Stewart loco - Leaded frame
#F-34601-u UB frame fits Ath loco / B23-7 Rail Power Loco
#F-36505-L F45 Holland Micro Motor Ath Loco (leaded and machined for large Holland can motor) motor and flywheels not included, frame only.