I'm about to open the floodgates...'88 930, all original concourse car in & out with 24K original miles with ALL documentation and records since new. Logic and common sense tell me to leave it alone but some of the posts in this forum are giving me the itch. Should I get into the engine? No exterior mods at all, just the usual exhaust, K27 upgrade and 1 bar boost spring sort of things. I have heard, and read, that ANY non-stock mods to an original car will significantly lower its value but others say that if they're done right, this is not the case. I looked for years before I found this car, I intend on keeping it and I don't want to make a mistake. On the other hand, I've read that fairly simple mods can turn a stock 930 into an absolute beast and apart from women, the more beastly the better right!? Thanks for your opinions.