Fuel dip stick for C182 w/long-range tanks?

The club to which I belong has a 1978 Cessna R182 RG Skylane.
This airplane has the long-range tanks (80 gallons total, 75
gallons usable - both tanks).

I'm looking for a fuel dip stick that can be used with this
airplane. I found the following J-Air FuelHawk at My Pilot Sto

http://www.mypilotstore.com/MyPilotStore/sep/1176

But the sales representative says it won't work for our specific
configuration (see the Q&A at the bottom of the page). However,
another comment from a customer at that same page reveals:

However the packaging is very confusing. You must rely on the verbage "Long-Range" and
"Standard" rather than the capacity of the tanks each specifies. The "Standard" model
indicates 43.5 gallon tanks, whereas the "Long Range" indicates 42 gallon tanks. Go
figure. No one (the Pilot Store people or my mechanic)could not give me a good
explanation, nor was I able to locate the manufacturer.

Do you know whether or not the standard C-182 Long Range gauge (link
above) will work with our particular R182?

I know I can purchase the generic fuel dip stick and calibrate it
myself, but I would much rather have an off-the-shelf unit if one
exists.

Thanks,

--
Mark Hansen, PP-ASEL, Instrument Airplane, USUA Ultralight Pilot
Cal Aggie Flying Farmers
Sacramento, CA