Welcome to the forum
The original gauge cluster can be repaired and will work just fine. There are a couple threads on here showing just how to do it. Probably the best one is by member theastronaut. If you are set on an aftermarket gauge cluster, the new Dakota Digital VHX is quite popular these days. Of course there is also their full digital cluster. Then another option is to go with an insert from Boese Engineering and fit it with aftermarket analog gauges.
http://www.dakotadigital.com/
http://www.boeseengineering.com/
I almost forgot about this member that rebuilds gauge clusters.
http://www.67-72chevytrucks.com/vboa...d.php?t=606863