89Quattro100

I am a lucky owner of a 89 100 Quattro, which i bought used back in november 2002 with only 55,000 miles. I had a bad expierence with my first snow in the car, learning that the Anti-Lock brakes didnt exactly perform the way the name says. This also is true in water. I replaced worn brake pads, and couldnt find any major problems with anything. I think this could be liked to poor tires, yokohama's that seem to be more slicks then regular driving tires (where on when i bought the car)
Secondly, i am at a large lack of speed. With every option you could imagine, and a new stereo, the car is beautiful. Im constantly being past by punks with hondas, ect. I read a previous posting, that said there were air filters and chips that where built for this car, any idea where i could find them? I was thinking about throwing a turbo on from a 88 100 cs, a similar car, but has a smaller bore for the cylinder, smaller displacement and a different compression ratio. Is this route as bad as it sounds?
Id love to have some help, post if you have any ideas for me.

Malcolm100CSq

...a C3-44 platform, 5-cyl. engine, where we here have C4-4A platforms with 12V-V6 engines.