Need help ID'ing this annular throwout bearing housing

Hi folks, I need help identifying the annular throw-out bearing housing pictured below. The only markings are in the casting: "C60 L3". This came from the attic shelves of a long-time race shop so I am pretty certain it is a race car part. Bore ID is 35.84mm. No center part, just this housing.

Thanks

Tom Duncan
tomd@oddog.com

Looks like a Saab 9000 base and I'd suspect thats a Tilton t/o housing. Call BRITS and talk to Jayme. 707-935-3637

Yep, Saab T/O with Tilton adapter, but missing center piston. Used on Staffs. Taylor Racing sells them also.

OK, guys, thanks for the info.

Tom