Ghostbusters proton pack part identification

Hi I'm new to the site , but I've been researching and building my proton packs for a few months now.
I'm attempting to source as many original parts as possible and a couple of things are bothering me.
Proton Pack Part Names - Equipment - Ghostbusters Fans Wiki

firstly the booster frame, this just has to be a found part doesn't it? I'd be very keen to try and I.d. It

Also When you compare the crank generator and the power cell on the original packs, the power cell looks very 'hand made' whereas the crank generator again looks like a well engineered piece or metal including casting marks. So again I suspect that that the crank generator is a found part.

What do you guys think, I'd be very interested in your thoughts.

The booster frame if I'm not mistaken was two pencils for the sides and a mat used for the brick pattern.

Here's a link to more specifics.
Booster Frame - Equipment - Ghostbusters Fans Wiki

Buy Nick a trons. Its the best around.

I will be using mostly nick a tron parts for the resin bits you can just see how clean and crisp they are, really nice work.

I have read that about the booster frame, but I'm not sure how that was arrived at . To me it looks like a kicker plate or some kind of trim. For some reason I picture a vintage vacuum cleaner the drum type

I well echo Nick a Trons parts if you're building. They are great for the pieces the are difficult to fabricate.

Here's another voice in support of Nick's parts. I had the pleasure of working with him to develop the belt gizmo kit, and his store has flourished considerably since then.

Another vote for Nick! His resin parts are spectacular.

I'm going to fabricate the booster frame now I now what it's made of, but I'll still buy a nick a tron one for my stunt pack.
So anyone got any ideas in the gearbox?