AutoMeter Gauges what size? 2 1/16 or 2 5/8 ?

[Hazieview]

Hey guys I'm getting close to being able to put my truck on the road but first I want to make sure everything is reading properly. New gauges are required!

I'm using the stock bezel for my 1981 Chevy and I want to use the Auto Meter Sport comp gauges with 5" speedo and Tach.

Which size oil, temp, voltage, and fuel gauge do I need? I've seen guys use the 2 5/8" gauge but they had to cut their bezel.

I saw another guy use the 2 1/16" gauges and he said he didn't need to cut the bezel at all and that they fit right in.

More than likely I'm going to be ordering me a set of brackets as well.

So help me out here guys. Once in for all what size should I get before making my order?

2 4/8" or 2 1/16"

Thanks guys! Trying to make it to heat wave this year!