mk3 golf rear brakes on rocco

Yeah, it should be the same as a mk1/2 Golf. As Gaz says, mk4 Golf caliper will go on with mk3 carriers/stub axles, but you'll need different flexy lines to fit them. In either case, you'll need a Scirocco 16v handbrake cable.

I'm looking at doing exactly this in the summer on my Scirocco if I keep it, as I've got most of the bits lying around, but I'm not sure I'd pay much money for it, they won't actually make any appreciable difference to the cars brakes at all. I'd certainly upgrade the fronts first. I'm on 280mm discs up front at the moment and it was a very noticeable improvement over standard.

It would depend what you want from it too, if you just want more bite then a different master cylinder/servo will make the biggest difference. Personally I like a firm pedal but find I cook the brakes easily as I live in a very hilly area, so I'll be sticking with the stock master/servo and upgrading the rest.

Ah cool, yeah, they should bolt on. Like I say, 16v hand brake cable and you're sorted. I'd still say they're unlikely to make an appreciable difference to the braking, there's so little bias on the rear of something like a 'rocco that the drums are perfectly man enough, but then if you're coverting to 5 stud, you might as well change to discs too, they're a touch lighter than the drums and they do look better

what you doing to get 300hp? the engine ive got has a revo stage 2 map and a ko3s turbo