1970 C10 Seat Upholstery - Chevy Duty

[Fuzzkh]

Hey guys,

Hoping someone can help. I'm restoring a 1970 C10 I bought last year. The seat upholstery was replaced in 2002. I have the receipt from the previous owner, they bought it from Chevy Duty in Kansas City. The new one I bought from Classic Industries is made by Parts Unlimited, but the aprons are too short to be able to hog tie it to the frame. I'm trying to determine who manufactured the aftermarket one I have, or find out who else to turn to other than PUI? The one I removed is clearly larger. My seat foam is 5 1?2 inches thick at it's thickest which is that same as PUI.

Thanks in advance!
Tim