The 67-72 had some very nice plaid interiors.
Since the original fabric is made of unobtainium you might try photochopping something like this into a picture of your interior.
Maybe try it with the back stripe running all the way up.
Something like this maybe?
Tartan patterns are pretty geometric so you have to be very careful to make the lines run straight or it looks off.
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1959 M35A2 LDT465-1D SOLD
1967 Dodge W200 B383, NP420/NP201 SOLD
1969 Dodge Polara 500 B383, A833 SOLD
1972 Ford F250 FE390, NP435/NP205 SOLD
1976 Chevy K20, 6.5L, NV4500/NP208 SOLD
1986 M1008 CUCV SOLD
2000 GMC C2500, TD6.5L, NV4500
2005 Chevy Silverado LS 2500HD 6.0L 4L80E/NP263
2009 Impala SS LS4 V8
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