I looking into changing my system from the current set up to a vacuum system has anyone done this to their car, if so how did it turn out and how much did you invest?

I'm not sure I follow you. What is your current setup? I thought they were all vacuum based??

The 1990 SSE models came with a hydraulic set up which didn't use a brake booster because it was a one piece unit.

Power steering pump assist?

Is that part of the vacuum system?

No, Powersteering assist braking is kinda like vacuum assisted, but instead, the hydraulic "boost" is provided by the power steering pump. eh, apparently not used in yours.

If you just have a normal master cylinder and some brake lines coming out, more than likely you could convert over.

You would need a matched set. ie, master cylinder, and booster to go with it. Modify some brake lines, and connect a vacuum line from the intake somewhere to the booster.
If you don't mind used, you could get away with spending a few dollars at the junkyard. Maybe $50-$75??
Hope this answers your question.

Thanks for the info Mike.

If you could, post some pictures of what you currently have. This would help us better. Especially if you decide to convert over.

O.K. Mike I'll have them up this week.