The 334th insignia looks correct. There were always small differences from plane to plane so, as always, it's best to have a picture of the exact a/c that you're doing. The font that North American used for the buzz numbers was something that they created in-house, especially on the earlier Sabres Some of the later planes did seem to use something close to Amarillo. I used Arial Narrow and then pixelized it and modified it to match my reference photo. Basically, it's rounder than Amarillo.