I asked this question around 2 years ago, prior to choosing the GT40.
First, be sure of what your looking for:
- a build project,
- a track day toy,
- a high profile race car replica,
- a high spec road car.
I looked at several GTR's, and really fancied one, but was always comparing it to the GT40. I had been to the GTD factory in 1990ish but not brought one at that time due to buying a house !
I wanted a track day toy that is streetable to get there & back, but not a daily driver.
What struck me was that you will see several GTR's for sale at any one time, and they really do not seem to sell well. Maybe it is bbecause those thatfancy one want to build their own. They also suffer a number of issues with corrosion, and bad water sealing causing electrical problems. There are a few build sites giving really detailed build information.
The big advantage the GTR has (imo) is the off the shelf Chevy engine builds that make awesome power. Far more than most of the Ford engines seem to see. They are normally mated to a G50 gearbox though, which don't last too long if your in the habit of doing burn-outs...
For me though, the wife had the final say, (that's what I tell her anyway

) and she prefered the GT40.
The 40 is as Howard says, far more recognisable. Both seem to draw the same amount of attention from the guys, but the 40 wins hands down with the girls (mine is still in build, so this is based on observations rather than first hand experience).
The bottom line is, only you can make the final choice based on your requirements. You have asked the question on a 40 forum though, so you will get biased opinions
