Yep. Aluminium space frame.
Its the 4.2 ABZ lump.
Annoyingly, like with all cars, now i'm used it, i wonder if i should of bought an S8 instead

You should like it, its basically 2 ABF's stuck together 
But pay more than twice the price for what?
An 'S' badge?
Recaros?
The 4.2 V8 is a bargain...
I've got the sport model, its got recaros and the S8 steering wheel. Its also got the same suspension as the S8.
The S8 had 340bhp, 360bhp on the later models. That's what you have to pay for.
The spec is great, its got Sat nav(crap old version), heated seats, cruise, 6 stack Bose, climate control, rear electric blind, electric seats,seat belt height and steering wheel with memory.
It was 62 grand brand new in 1998.
It certainly is a bargain...
Have you driven lots of Audi's?
Going on the handling argument, my dad has an A4 quattro Sport 1.8T, the handling is amazing on B roads, easily as good as any golf, if not better...