Try this web site — http://www.sportscars.net.nz/  There is an Distributer in USA 

Mr Bill Allen
Allen Motor Cars
1204 Knob Ave.
New Albany, Indiana. 47150

Ph 812-941-8550 or 800-457-2417
Fax 812 949 3074

E Mail allenmotorcars@sbcglobal.net