I always wanted a Lionel 255e engine. Price was always too high for my budget. Picked up a 255e shell in excellent condition and price. My question is are the 255e and 263E parts interchangeable? I am attempting to build a 255E around the 255E shell I have. My question is are the parts basically the same that I could use for this project? I have a bunch of 263E parts hanging around to start the project. Any help would be much appreciated.