I don't think there is either, or from at least '89 and on up to '94, probably even '95. Any way you slice it I have several crap seats I could pull them off of so I should have you covered.
1991 RRC 4.2, R380, LT230, TrueTrac, Detroit, sliders, 33s, blahblahblah....
1994 RRC LWB
1994 RRC SWB
1995 RRC LWB 25th Anniversary Edition
1995 D90 project