Don't know if you realize this or or not...but there is more than bolt on parts required to convert to awd. It will require some welding, as the fwd chasis does not come with anything for the driveshaft.
I don't know of anyone localy selling any parts...but albert (dvdtfab) has some awd parts for sale on his website.http://dvdtfab.com/for_sale.htm