Actual R-code cars are purpose built race cars. I thought all SR-code cars had the double stack wing, rear seat delete, 4-point chassis (roll bar), 4-point saftey harness, and RACE style Recaro seats.........and only 2 were built #1 (yellow) and #11 (yellow).
But that being said I do really like Terry's car, the Red and gold combination is unique. I owned a Canyon Red 1986 with gold stripes and wheels up to mid summer of 2005, sold it to Kyle Shaw that visits this webboard often.
The R-Code as you mentioned was actually the "SR" designation. Very few of those cars built. Mark sold two yellow cars last year and there is a dealership in WA. state with one now (white)
People get confused with the designations, SR, R- Code, S351R and so on. Actually, the first year of the new edge cars, the 99's with the Series I recieved the designation R- Code after Saleen dropped it in 1996.