Hello KZCrazyinColoradr and welcome.
They look like 3 nice bikes there a CSR, B4 and K1 belt drive and what a bargain price!!! Do you plan to restore them all? Sadly if not you may find a few issues with interchangeability of parts. All 3 have different frames and engines. Some parts will interchange and other parts may with a little fettling. Most of the imformation is in the library section but ask away if you are struggling.
Enjoy the site
KK
