I just bought my 91 about 2.5 months ago, and love it. It came with a fair number of mods, headers, exhaust, bbk, short shifter, sway bars, lower springs, shocks, wheels. All things that make the car fun to drive, and look good (maybe a bit loud for my taste but it's ok). I, like Tim, also took my car to an NSX Pro (Ben at Daisy Import in Woodbine MD) and dropped about 5k to replace all belts, hoses, gaskets, sensors, TB, WP, alternator, little, this and little that, all things to bring a 18 year old car back as close to new as possible, money well spent, in my opinion. The money spent on the mods from previous owners was never recouped (I spent about what I would have spent on any 91 in that condition mods or no), and mods were not a large factor in the decision to buy. I bought it because it had a very clean car fax, 80k miles, an almost perfect body except for some rock chips, inside 7-8 easily fixable to 9.5, it was local not 100's of miles away from me, and price. All the mods can be removed and replaced with stock, so I am now on a 5 year mission I call "Stock in a Box" and as I find the stock parts at good prices in good condition to replace the mods I will buy them and put them away for safe keeping or to be put on as the mods fail or not. I hope never to sell, but never say never, and if I don’t do it, then some one after me will have the option to return it to stock As far as an investment goes, "Not". Now seem to be a good time to buy as prices are low, but they could go lower. 91-94 seem to have most of the depreciation wrung out of them, but they are still a money-losing proposition. With maintenance cost, insurance and storage not to mention any depreciation you might as well just go dig a hole in the ground and put your money in. You will almost certainly never recover all the money you put in it, even if prices go up over time. There are many worse financial decisions, but it is not an investment. That said I much prefer driving, looking at, and showing my friends my NSX, and knowing I have something rare and truly special, as apposed to my hole in the ground.:smile: