Have you thought at all about adding the light too? I have CatEye HL300's on both my spirit packs which is whats used on the GBII Slime blowers and the pack lights in TVG look to be modeled after them. I absolutely love the lights its like having a shoulder lamp like the Colonial Marines in Aliens lol!
They have a cheeper version of the light here in the shop
https://www.gbfans.com/shop/blower-part ... headlight/