Drive Guys: Caring for a disability-friendly 1986 Mitsubishi

Dear Ed and Jeff,

I am having difficulty finding a rear motor mount for my 1986 Mitsubishi. Several mechanics had no luck finding one. I like the car as I am handicapped and can bend my leg to get in the car. We have a 1986 Honda but it is too high for me to lift my leg to get into. Apparently Mitsubishi discontinued that part. I would appreciate any suggestions. Also the car needs four new tires and a new battery soon. In 2006 we invested $5,000 into it for a transmission and some other repairs. The car runs well except for the vibration caused by the faulty motor mount. Please advise.