Does anyone know where I can get seat covers for the driver and passenger seat of a 97 expedition?

I changed my split bench reg. cab 00 F-150 to a console and seats out of a 97' Expy but the vinyl has been splitting in the Houston sun and heat over the last year.

I did call katskinz and they could not help me because I already have leather (which sounded really stupid to me, maybe someone could explain that one for me) and the only option they had for me was an entire set that would have been over 900 dollars and I wouldn't have been able to use over half of it.

If anyone knows of a company that makes excellent slip ons and replacements just please let me know. The only regret I have had of the changeover is how ridiculously hot the interior gets now that I have vinyl instead of fabric.

Thanks for any and all help.