Hoskins CFS 2001A Fuel Flow

[cessnadriver]

Hello All.
I'm looking for a copy of the STC for Hoskins CFS 2001A Fuel Flow or other Hoskins fuel flow indicators. I've contacted the FAA for a copy but so far they cannot find the detail information. I've also contacted Sandia Corp. which I understand is the holder of the STC for this indicator, no luck, so far. If anyone has the STC (detailed) info. which lists the by model for '65 C337, I'd appreciate a PDF copy. I'm planning on install the Hoskins in my Skymaster. My e-mail address is bstory@pa.rr.com.
And as usual "THANKS".
BILLS