[MAStuart]

Hey! Thanks guys. The glass packs are 2in in and 2in out with 2in core. 3in outside diameter. That is what the plans I am using calls for. It doesn't mention anything about the head pipes. My plan was to use 1 5/8 and 2in tubing. I have spent alot of time looking and searching for pictures these cars and there really is a lot of difference in the 6 cars. One appears to have a lot bigger diameter mufflers with maybe 3 in outlets on them, but the inlets look smaller (CSX 2601). Some of the others look small like what Chuck was using. Thanks again!! Mark