rookie? how to add aftermarket gauges to stock panel

[1972BackInBlackC10]

well i only had 3 gauges and i didnt want to have one empty hole so i used the lens, inner and outer tin from the full gauge cluster, i trimed the parts off the lens that i didnt need (oil, temp, and volt markings) you need to be careful when you do this because they break easily

the inner tin i had to cut holes for the gauges to fit thrugh because from the factory they only have a half circle cut out, the outer (back) tin i didnt have to do anything to it besides take the lower gauges out the oening were big enough for the gauges i used

i did use the printed circut from a cluster that only had a speedo and fuel gauge though so im not sure how you would make yours work with one from a full gauge cluster, and i didnt have to do anything to the bezel the gauges sat in it just fine