944 turbo caliper reapir

[Hoghead]

I want to powder coat my calipers and for the life of me I cannot find a source for 944 turbo caliper seal kits. Piston sizes are 36 and 40mm
I did find kits with pistons at 54.00 ea x 16 = 864.00 which seems a bit steep.

Just the seals and scrapers will do as . If I need psitons I can have them machined here from 316L for about 8.00 USD ea.

What is so special about these seals anyway? Surely it is a standard seal and scraper that is used in other applications.

Can anyone suggest an on-line source?

Thanks
Robert