Here is a 1:18 model of Ecto-1 I purchased. It think it has 20 LED's on it. I might use it as a topper. I also have the Zombie Yeti art blades, Comet DMD glare guard, and have ordered PDI glass.

I have one of these and will be mod'n it to make a topper unless there is a better option offered from Laseriffic.
Few things I would do:
Headlights on and warm leds constant on.
Flashing lights only on during multiball.
Body itself lifted off of the surface of the head of the back box to where the wheels can be seen from player standing position.

I would also work in the figures with interactive EL wire proton beams.

I am custom painting shooters for the GB pro model. Using a nice metallic blue, flamingo pink and metallic purple. The colors look great with this machine matching the cabinet color scheme. I make them in two sizes, 1 1/2 inch and 2 inch diameters. Heavily clear coated and durable with easy installation. Check these out at www.modfatherpinball.com

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So far, I have the following (but no machine):

Zombie Yeti blades
yoyokopter ghost trap
Mezel Mods Ecto-1
Mezel Mods green/pink Slimer pinballs
Mezel Mods scoop LED
Mezel Mods Storage Facility LED
Ulek ghost trap flipper bat decals
Speakerlightkits light-up speaker grills and "no ghosts" acrylics
Ghost flasher cover
CoinTaker Red Tremor shaker
Pinball Customs Slimer shooter

Hope it's all the game that you want it to be ! I usually pick up a game then mod it, to my liking after playing the unit for a while!
Never occurred to me to spend so much on mods before the game ever came to the house!

Well then Pinchamp ... I now see the passion!
Hope your game comes soon , fun unit!
All the best!
Now I know who I'm going call when I'm in Calgary!
Regards