Ater becoming Modstore visitor member you can see Cascade owns the current freighter STC and did CRJ cargo modifications. Its a simple one using existing doors.
http://www.cascadeaerospace.com/imag...DEC_9_2013.pdf
Miami-based Aeronautical Engineers Inc is working on a cargo door that will become available in 2015..
Aging CRJs To Get P2F Conversions | Aviation International News
Wonder if it will become an freighter.
