RE: scale decals for 1/5 P-51D mustange
This economy has taken it's toll on a lot of us I fear.
I'm a self employed plumber and the majority (90%) of my business was on flips and major remodels/additions. My new business plan has been modified to target 90% service and repair work instead.
The Avery self adhesive label paper in clear or white does a good job and is quite inexpensive. you can get the military fonts on line as freeware or shareware and add them to your WinWord or word perfect, etc. font library and make-up your own nomenclature sheets, print 'em off at home on regular paper, then go over to Kinko's and run 'em off on the decal/label paper with the laser printer. A couple of light coats of TopFlite fuel-proof clear over top of them and you're good to go.
These were done for a Kyosho ME109 kitbash that I did awhile back and after two years and as many gallons of fuel they still look the same. The JG27 shield and the under exhuast decal were done on the white lable and the fine print on the clear. On the underwing radiator label you can see the edge of the decal in the photo but on the rudder and by the tail wheel they blend better in the photos. in person you can see the edges on all of the clear ones if you are looking, but from 5-6 ft away you can't.
Edit for added pics and text-
These may help as well. Maybe you could save then copy and paste to a cut sheet, or get an idea as to what all might be on the A/C where it would go. In my research I've found that the currently flyoing p-51's are grossly mis-marked if at all and the vintage photos all differ as to what was marked and what had been painted over or removed.