[Disk Brakes]

Looking at doing a rear disk conversion. Would the polo 6c stub Axle with caliper mounting points work seen as the rear axles are the same part number? Are there any other ways to do this successfully? 

Thanks. 

[Performance advice]

The gearbox is the same as the 1.0 fabia tsi stock 110bhp and the up gti stock 113bhp.

[Performance advice]

I have a small naturally aspirated skoda citigo 1.0 3cyl mpi, currently 60bhp with a few small modifications. I was wondering if you could offer me some performance modification advice to hopefully break the 100-130bhp mark without stressing out stock components and what stressed components I would need to upgrade so my engine doesn't run into any technical issues.