First, I have a 1991 RS 305 with the 5-speed and 3.08 grears. I want to put in a 4th gen rear end (hopefilly posi and disc brakes and higher grears). Has anybody done this, how hard to hook up the disc brakes and e-brake, and do I have to make any special mods or will it fit right in. If i want these optios on my new rear end I need a z28 donar right???

Are there and web links you know off that will help???