Anyone seen filter gasket this thick? What filter do I really have?

I’ll start this by saying my existing filter top has a gasket that is 3/16” thick and that is 3x what comes with the Napa gold 1010 cartridge.
I went thru the oil filter tech sticky and mine is smaller diameter than the s6 shown there….My filter is labeled a S6, but i know decals & paint are easy to get and install…

My filter housing see pic is 4-1/8” od with lid off

The engine filter was on the truck when I got it, the engine was built by Troy Robinson (according to his plaque), so my quests is he installed it??? When doing the engine…


Existing Gasket:
4.2" OD
3.75" ID
3/16" tall
1/4" +-wide

Housing is 4-1/8 od x +-5"t

Uses Napa gold 1010 filter
Cartridge has 1/2" id center hole 3-3/4 od x 3-3/4 t, gasket with filter fits lid perfect but is only 3/32 thick

Chuck
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Hank: 46 Chev 1/2ton shortbed
2023 Miata RF Club