They made more than 30, there were 62 M505 coupes made for the US market. In terms of value, here’s a comp for you from an auction last August...
Auctions - 1989 Porsche 930 Turbo Slant Nose Coupe | Owls Head Transportation Museum
This is an ‘89 with just 10k more miles on it, in Guards red on black interior as well, and with a reconstructed title too. However, this reconstructed title is due to a theft recovery, which I’d think is a better title issue to have than one that has literally been totaled due to physical damage. It’s probably as good a comp as you’re going to find. With that said, though, and it’s only my opinion, but I think it could be hard for yours to attain this same price due to yours being totaled versus this one just being stolen and recovered. I know this one sold below its estimate, but I think that estimate was based on fairy tales and pixie dust. Nobody was ever going to pay 150-175k for a reconstructed title 930 M505 coupe, maybe in a decade that’s the market, but it isn’t right now. If you can get 131k for yours I’d be a bit surprised simply based on this like kind comp. I’d prefer owning the theft salvage with 10k more miles on it over your accident salvage. That’s just my two cents, maybe others see it differently. It at least gives you a baseline if nothing else.