The kitted versions of the Conquest:
Conquest IV (4) by Phillips Aircarft
Conquest V By R/C City
Conquest VII BY R/C City
Conquest 120 By R/C City
The Conquest V was modified by Jim Graham (owner/founder R/C City) mostly with a deeper fuselage.
The Wing and stab of the CV and CVII are identical.
The Conquest 120 is pretty much the Conquest VII on Steroids.
I built a V and a VII, both flew very well, but I preferred the V with the larger fuselage profile. Dave Patrick flew the VII at the '89 WC and made the finals.
I know of at least one Conquest VII built with a YS 91AC (about 25 years ago). It flew great but it was a tight fit getting the engine installed.