Try this one
http://warreplica.homestead.com/
also try
http://www.aircraftspruce.com/menus/kits/index.html
There was a composite 3/4 p51 replica kit getting around from fighter escort wing and a few kits were being built here in oz, Conrad ? from crop jet in Wee Waa was building one but that was 10 or so years ago now.
What I want is a spitfire and if I can't have a real one this will do
http://www.supermarineaircraft.com/