TMI is pretty good, not sure if they fixed the dimensions of the welt-cord. If they did, then it would be a really nice product.
For extra effort, you could procure NOS vinyl and have seat covers and door panels made. Have to contact Scott Halseth at NPD to arrange this. It's not too much more expensive to have them made. Obviously, NOS vinyl can get pricey depending on how much is needed. $25-50 a yard.