The only Apple to pear example is the gto.
Both twin turbo.
Both awd/4wd.
Both 6 cylinders.
Both have climate control.
This is where they start to go their separate ways....
As mentioned, a lot of the older cars, now have parts that are "obselete" from their manufacturer.
And aftermarket companies don't cater for them.
I have bought many genuine parts, and priced many as well.
There's not much Nissan have discontinued for the r32.
What did the cars perform like out of the box?
R32gtr, around a 13.? quarter mile.
Gto, I believe were high 14 at very best.
Aftermarket parts(if looking to mod) are plentiful for the gtr.
For the gto, a lot more is "custom made" only.
And for 20k, you can buy a very nicely modded 32.....
Heck, for 22, you can buy mine.
I was looking at the gto originally, and I can't say how happy I AM, that i ended up with a gtr instead.
Hope this helps your decision.
Let us know which way you go.
Cheers, Luke.