Headliner side molding and weather strip channels

I'm really not happy w/ the fit and look of the ABS and I'm now considering pulling it out and installing a fabric/bow type. I like the looks and finish of the fabric style better anyway.

A couple of questions about the fabric liner:
-The roof on my '74 is from a '72 (replaced my roof due to rust). Can I install the bows and fabric liner on a '72 roof?
-The Yearone website has a note on '72's stating that somewhere around '71 to '72 the # of bows was changed. Is this true and how do I know how many bows it takes?
-Are there any boards for the sailpanels or is it just fabric (is it all one piece?)?

Any suggestions would be appreciated.