Probably the best shaker motor construction I have come across, built like a tank as well - triggers off a flasher lamp and the up/down targets - as well as the ship when it explodes.
The kit will do other machines but may need modification to the loom. Be warned the pinbits boards do not work in remakes - however you can connect the shaker motor directly up to the yellow and black molex conenctor in the cabinet and bypass all of that.
Shaker motor is a standard 12v DC, so you can wire this in using other PCBs available from Jim at MyPinballs.
Price is £100, collect from me in Brum. Or I can courier it to you at buyers expense.
If you pay for it - I can leave it at Tilt when that reopens it's doors.