Aftermarket Gauges for 54

[Houston54]

I am at the point where I am ready to purchase the guages for my project. The quad style gauges I am seeing from Dolphin, TPI, Classic are 5 inchers while my dash has 6 inch holes waiting for new gauges. I have seen the aluminum spacers also available but am wondering if there are gauges available that are 6 inch or if someone has mounted the 5 inch quads without the billet spacers. The less billet the better on this particular project.