Okay. Are shopping for one and trying to find a good one or do you have one and are trying to intsall it?
I'm planning to make a 1:10 scale working model of a David Drake fiction called a hover-tank
it has eight fan nacelles, and its thrust and steering as described in the books are going to be interesting-to-impossible to accurately model... which is why I want to try.
I'm an idiot that way.