Their products look good.

Your link is to 47-53 gauges (that you state are 5" diameter). They will, of course (I presume) work fine in a 1947-1953 Chevrolet/GMC dash.

The originator of this thread, and I, were specific about 1954, which has 6" diameter gauges.

"Does Classic Instruments sell original-fitting 1954 Chevrolet Truck gauges?

A link to the parts would be helpful."