I believe the LCR-30 was a product of Von Schweikert Research in Watertown, New York. After a flood of the factory in 1999, Von Schweikert Research went out of business. Albert Von Schweikert went on to found his current company Von Schweikert Audio in Riverside, CA, which designed the VR-4JR. The VR-4JR and other later speakers of VSA built upon the experience with the products of Von Schweikert Research, so I expect similarities in sound, but do not know if the LCR-30 would be the best timbre match.
I am using a VR-4JR MkI as the center channel with my VR-4JR left and right speakers. The price of used VR-4JR speakers makes this another cost effective option, if you can purchase one. The bass module may be used horizontally if the center channel would otherwise be too high.