Here's a few links for you to check...
Scale Link (1/76 and 1/72 range)
www.scalelink.co.uk
Flightpath (1/72)
www.djparkins.clara.net/index3.htm
then click on Flightpath logo
and for an exhaustive list of what's out there (1/72), go to
www.72scale.com/vehicle/vehAGS.htm
Hope this helps!