Sadly the days of the R32 GTR are over. It's a 22+ yo car that has run its course, done a fine job, but they are just too used and in bad shape.
I'm wanting a new track car, looked at the r32 gtr market and was not impressed with what I seen (and this was only online, didnt even bother going to physically look at any). You would need to spend as much tidying them up as you did on the purchase price, that suddenly makes it in the bottom end of the r34 gtr market which are 'still' 13yo cars.
I cannot see the value of r32 gtr's going up or holding value, even clean examples. Too many were made, too many are in the country and too many still exist at under $10k prices.