I'm going to assume you mean aftermarket gauges, and that your stock cluster has idiot lights.
Don't know of any aftermarket (or factory) blank cluster. The problem is that the factory gauges aren't "wired" -- the back of the cluster is a printed circuit board. I suppose you could toss that and hard wire everything, but that sounds like a lot of work.
What most people do is buy a cluster with gauges out of a junkyard. They all used a mechanical speedo through 1990, but there were two styles of speedo cable connection. If yours is an '85, that's the early style. Any cluster from an '84 thru '86 will work. I don't know if the '87s got the old style or the new style.