Find a complete set of seats out of an 04+ GP and swap those in. Way better design and comfort. Or find GXP seats. Blower motor resistor sounds bad for the #1 position, junkyard or ebay for a working stereo (and I use CD's still, lol..), there is a Heads-Up display how-to on here that shows how to fix and actually improve the HUD.

For the weatherstripping maybe try gmpartsdirect.com