i bought a 1999 S2, RS4-S 5 speed with 64,000 on the clock for $15,000 3 years ago. so its a R34 engine with the R33 GTR running gear.
Best car i have ever had, its a wagon but drives and sticks to the road like a sedan. The response through the steering wheel is like driving a go-cart so fast and nimble.
Im a hills driver and its unreal what you can get away with man. (i used to have a RX7 half the weight and i can go harder in this thing that that.)
The turbo's are puss though, they are made from plastic well nylon bearings anyway so if you want to do hard hills driving (on off boost heaps) you will melt and warp the internals of the turbo eventually.
I got to 80,000 in mine and the turbo was literally melted.
Decided to go for a rebuild/ high flow on the turbo insted of bolting some massive lagy snail on it. The rebuild was 2000 buks and the thing is indestructible now. it can take over 20psi boost
Did an exhaust, air pod, mid sized inter-cooler (i recon big inter-coolers promote lag), new shockers and clutch just recently and the thing is a dream to drive and it blows off new Holden's and Fords with out an issue.
I can put our new born in it and drive normally/ sensible and when he and the misses are out, i can Cain the crap out of it and not have to worry.
If you drive these cars like a nanna then you never have an issue.
If you like to give it some stick then u will go through the normal clutches frequent oil and filter changes, tyres etc alot more. but thats with any car, the difference whit these things u feel safe and in control doing it.
I really feel like i ranted on a bit dude but i love these things and you need to get one