suspension help

I have an 87 lx 5.0. I have been reading my muscle mustangs and fast fords to try to help me decide on a suspension setup for my car. From reading it, it says in there that matching the wrong items together can actually hurt your suspension. I already have mm full length subframe connectors and love mm. Should I stick with mm for all of my suspension or what is a safe way to put different brands on there. The only brand other than mm I was thinking about using is steeda or upr for a coil over kit. Please help so I don't put work into this once and have to change it
 
I don't like mixing and matching either. I went with the steeda stage 3 street setup simply because it's a proven combo, on and off the track. I also hear good things about mm, but have no experience with it
 
cant go wrong with mm, there kits are awesome the only thing i would do different is go with the watts link from evolution motorsports instead of the panhard bar....thats whats next on the docket