How do i mount this?

Hey guys,

I have a sun 2-5/8 fuel pressure guage that i want to mount on the front cowl of my scamp but problem is the gauge doesnt come with a mounting cup...all it has is some metal bracket that goes over the back (in pics 2 an 3)...its my freinds gauge and he told me that i can use it, and i would like too, but if i cant mount it its useless for me




I found a couple of mounting cups on summit racing made by auto meter and summit...the ones from auto meter say they are only for autometer gauges, and the summit ones just say for 2-5/8 gauges..here are the two of them-

http://store.summitracing.com/partd...925228+4294923437+4294891601+115&autoview=sku

http://store.summitracing.com/partd...4294923437+4294891601+400304+115&autoview=sku

Can either of these cups be used? is there some sort of other cup i can use? (sun doesnt have any- this is an old gauge as well)...is this gauge totally useless now? (dont want to try mounting it without a cup- i think it would look goofy)...any help on this one would be great guys

thanks
Matthew