Interesting reading what everyone has to say about this subject.
I'm old enough to have seen the 240Z released way back when!
Throughout the 70's, 80's and 90's nearly all who owned a Z car modified them in some way. It's just what happened unfortunately. If only we knew back then what was to come lol
I actually owned a 240ZG replica back in the mid 90's. It had a few mods to say the least. Still wish I had it.
I wouldn't hesitate to buy a tastefully modified 240/260Z or even a 280ZX.
There's something about a brake upgrade, lsd, close ratio gearbox, triple webers or even fuel injection that appeals to me still today.
I'll even go as far as saying air con and power steering wouldn't be a bad thing. But you get that already with a 280ZX!
As far as engines go, I've always been a fan of the L series in all its configurations.