Here's mine.
Autometer 5" speedo and tacho. The rest are the larger 2 5/8" gauges.
Just an idea for you that might help with your layout. Get a bunch of pictures of the gauges you like or plan to use. Print them out at the correct size and then glue them onto some thin card. With a blob of bluetac on the back of each one stick them on in different locations till you find a layout you like.
Easier than drilling all the holes and not being happy with the result.
Cheers