I am putting together an 1st Parachute Army FJ impression and here's where I got my stuff.
FJ Boots:
http://atthefront.com/
Uniform:
http://stores.shop.ebay.ca/Spearhead...__W0QQ_armrsZ1
Field Gear:
http://stores.shop.ebay.ca/Memory1945__W0QQ_armrsZ1
FJ Helmet:
http://www.ima-usa.com/
I purchased regular Y straps. There are FJ Y straps out there I just didn't bother. By Fall 1944 the Germans were more concerned about getting food and avoiding Mustangs and Typhoons than correct Y straps.
For my 101st AB impression the pistol belt, shovel, mag pouches, canteen and some of the helmet parts are WW2 dated.