You can get a lot for your money. Just think, someone could buy your Z with the 20k you invested for practically nothing ;-)
I could have had a supra 4-5 years ago when I bought my 2nd Z for ~2k more. I prefer the Z for sure, but I know what your saying. Those who bought Supra's in the nineties were in the right time at the right place will probably get back all the money they dumped in mods and then some. Yes it sucks, but anyone who buys one now and dumps money in stands a better chance to loose. If I had one, I'd sell it and cash in on the craze.