Bach 0-4-0 to N scale

[PRRnTX]

I need some imput from someone who is familiar with the HO Bachmann 0-4-0's: I been considering building N scale Pennsy P-5a Box cab(s) from the chassis--the drivers and axel spacing are a close enough match with a ruler (didn't have access to calipers at the time)! But in regards to reguaging--when I cut the length of the chassis--is it metal or plastic (or both available from different production runs?)? Are the axels single or two piece? How thick would the flanges be Etc.

Thanks,
Bill / PRRnTX

[PRRnTX]

Big OOPS! I mean "0-6-0". Any info would be helpful for this absentminded speller