Need help on picking gauges....

Also just got a dual gauge piller with one lunar A/F ratio gauge. What should be my last gauge. I wanted a fuel pressure gauge but no luck finding one under 200 dollars.
I was looking online and saw this: http://cgi.ebay.com/ebaymotors/UNIVE...62035411QQrdZ1
Would this be of any use for me?? Most all the gauges are something I already have in the stock speedo so no reason to have 2 of one
ANy suggestions on what I should get to complete my set?
Thanks!
Here is an update on my gauge situation.
5" Autometer Monster Tach
Dual Guage Pod with lunar a/f ratio 2 1/16
Oil Temp (will go in the vents) 2 5/8
Water Temp (go in vent as well) 2 5/8
So i'm just neediung one more 2 1/16 th gauge to go in the pod and that will about do it!
Any more suggestions?

