Wheelchair Conversion For A Van

To start this off, I have Duchenne Muscular Dystrophy and I’m 20, I live at home and it gets really hard to go places, go to family gatherings and going out to eat or even just going anywhere really, I never leave home rarely, or never want to leave home but when I have to go to my physical therapy, It’s gets hard to get in and out of the van we have, I have to be picked up and put in the car seat and it’s especially hard when it rains but it would be easier on me, my mom, and my dad if we have a converted van for a wheelchair where I can just roll up in the van and get locked down and go to where ever, a new handicap van is 45,000+ but only to convert my parents van is 15,000 to 20,000+