If you find one PM me Ill gladly reimburse you for your trouble.
What I got was a duralast sw3814
I am going to remove the rocker off this one and attempt to use the thumb lever and top cover off the old one. I see little difference in the actual switch assembly its only missing the ears that snap on to the plug. Worst case scenario is I come up with an alternative to finding one in a junk yard, but if it doesnt work...I hope you run across one just in case.
The below is the original switch with the top cover off.
I couldn't be sure on the Airtex 1S3520.
I did call a salvage yard in anchorage and they said come on down......I laughed...I only wish there was a road off the rock....