The brake conversion has been beaten to death in terms of information/knowledge available with a quick search. As for the abs, be happy you have a chassis without it. The abs system in cars from the '90's compared to cars today is vastly different as far as response/feel is considered. I would never want an abs equipped s-chassis! A missing hardline is not a big deal at all, simple tools will allow you to make one yourself for CHEAP!
Do a ton of research, and if your ever stumped, shoot me a pm and I'll be happy to help. Good luck!!
