Audi4life20v

Hey everyone i recently bought a wonderfull 91' 90 Quattro 20v and I'm looking for some upgrades to try and save for. I wanna keep my car conservitive but still stylish and was wondering if the S2/RS2 bumpers would be a direct fit on my car. Ive seen on some other sites that it is possible but does anyone have any experince in this area? Do they change engine compartment airflow in a bad way?? And I know they look awsome on the S2/Rs2 but how does it look on a 90?

Any tips would be wonderfull as today i was forced down a road that had a steep angle on to the main road and i did scratch my bumper a bit ='( Also any $$$ info on the price for a front and rear bumper would be good so i can save for it. Thanks!

Kyle.