Having been in the broader market for a while, 75k seems a lot of bob for that car. That said, I think in the day of $20k+ light British fare, the market may come to realize the CSL, CSi, and CS (in that order) are currently undervalued. And while not to as great an extent, good examples will follow their contemporary comps such as early 70s 911s, and in extremis, Dinos. While there have been many wonderful upgraded cars, this market movement, I think, will follow the established pattern of original or period equipped cars being the most desirble to collectors looking for the 'next big thing'. While I may be wrong, friends, now is the time to get a solid original coupe. I just did. All of the collector guys looking for an alternative to $70k 2.4 liter 911s are just an epiphany away from realizing what a classically great car the E9 is.
JMHO, YMMV.