Source needed for cheap seat covers

[raceron1120]

Remember those cheap plaid seat covers we used to be able to get from J.C.Whitney or similar sources?
A friend is looking to get set of them for his '41 Ford 2 door sedan but can't find any that would fit his split back seat. Horse blanket style, plaid or solid would work but he prefers to keep it 'old school' style.
Does anyone know of a source for what he might be looking for?
Thanks.