Exhaust and rim help please!

[s9gme]

Ok I have just bought a 1.8 Driver,can anyone tell me if a gti exhaust is the same? Or is it just the black boxes?
Also I have just bought some anni wheels for a refurb, I have lowered it on coilovers,fairly low,problem is my wheels atm are 4x100? Looking is the pcd adaptors but will 20mm be too much? Thanks so much guys,newbie in need here!

[lemski]

20mm will fit, its probally easier to get some 6n2 polo gti wheels as the the same bbs rx11 but 15inch and 4x100.
Exhaust will fit but maybe need a reducer from the cat/downpipe to centre section.
Welcome