I spoke with Josh Murray from J. Murray Inc. and he was able to dig up the last two pieces that I needed for an incredibly cheap price. The 50's era helmet should be completed by the end of the week.
If anyone is ever in the market for U.S. M1 helmets or parts Josh is highly recommended. He supplied all of the U.S. helmets for The Pacific (HBO mini-series), does restoration work, and has plenty of original and in-house made repro parts. I normally troll his "original helmets and helmet parts" and "rummage sale" sections a couple times a week. I picked up the Vietnam era shell that way for only $12.50. I've also picked up several other original parts from him at a fraction of the cost that they normally sell for on eBay.
http://www.jmurrayinc1944.com/
If anyone is ever in the market for U.S. M1 helmets or parts Josh is highly recommended. He supplied all of the U.S. helmets for The Pacific (HBO mini-series), does restoration work, and has plenty of original and in-house made repro parts. I normally troll his "original helmets and helmet parts" and "rummage sale" sections a couple times a week. I picked up the Vietnam era shell that way for only $12.50. I've also picked up several other original parts from him at a fraction of the cost that they normally sell for on eBay.
http://www.jmurrayinc1944.com/