The best place is to ck Craigslist so you can buy locally. Shipping costs for a heavy item like that could be high.
There is a website named "The Mobility Resorce" where they over a great varaity wheelchair accessible vans
You can buy at a shop
Used wheel chair vans can be bought online at various sites. Use the the following links to find them: www.mobilityvansales.com/ , www.aavans.com/Vehicles/UsedWheelchairVans.aspx, www.mobilityworks.com/, www.wheelchair-getaways.com/wheelchair-vans-for-sale.htm
There are several online sites that sell used wheelchair parts. You can also check with local stores for wheelchair parts.
Perform a search on Ebay for a ood used wheelchair accessible van
You can check with local used car lots for vans that are already wheelchair equipped or than can be converted. There are also online websites that specialize in used wheelchair vans.
You can go to many places online to get information on wheelchair racks. Some of these places are www.discountramps.com/scooter-wheelchair-rack.htm or MobilityAids.Smarter.com
Allegromedical.com is a great resource with a wonderful selection of products. SpinLife.com is also a fabulous resource for all things wheelchair-related.
Yes try www.mobilityvansales.com
It's best to make one their are free plans online that are easy to follow.
You can read about wheelchairs at http://www2.cruzio.com/~yogi/whchair.htm. This website will tell you how to select the correct wheelchair, wheels, and accessories. It will also tell you about the safety and maintenance of your wheelchair.
You can buy used online books from Kitabay