Optional instrument panel with tach

I was at the wrecker today and what did I see but a full size 1993 GMC Blazer with the optional (at least for my truck) instrument panel with tach. I'm wondering if that would be a direct replacement for my standard instrument panel in my 1992 K2500 without having to add wires or change the connection plug? Or should I be looking for one from a 1992? That's the first one of those I've seen there in over two years of regular visits and seeing things such as Starcraft Suburbans! Both vehicles have 5.0 or 5.7 engines. Thx.