Does anyone know where to buy interior parts such as trim for a 1990 volvo 240?

The trans is fine except sometimes when shifting into reverse it shifts hard. And those are the only two lights other than the service light that comes on to tell me I need a oil change.

I bought a 1999 volvo S70 GLT and I found out I have the codes P0717, P0715, and P1618 with the check engine light and the winter mode arrow flashing. I hear that this means I need to replace my input speed sensor to my transmission. Is that the only problem? I understand what some of the codes mean...

Do you still have the upper dash, the part for defrosting the windshield?