"DR SMITH" - GHOSTBUSTER PROJECT 2008 - PROTON PACK
Here is my Proton Pack build - never again! Bear in mind this was back in 2008 so any suppliers mentioned may not be trading today. Head over to https://www.gbfans.com/shop/pack-parts/, they also have a forum where you can get lots of help and advice. They also sell the Clippard R-701s for the pack and gun.