>Are these models equipped with a variable speed prop?

You can review the Type Certificate Data Sheet here:

http://www2.airweb.faa.gov/Regulatory_and_Guidance_Library/rgMakeModel.nsf/0/48ee1c31575ba7848625706d006f021e/$FILE/A1CE.pdf

(or for those that have problems with wrapping URLs)

http://urlizer.com/00/2112/

And see (on page 7 of the TCDS) that Beech made them with and without C/S
props.

Bob Steward, A&P IA
Birmingham, AL