I was able to find a replacement motor for my JCT brush hog that fit into the original bracket (with 2 bolts instead of the original 4). I should have gotten it with a longer shaft, but the coupler just barely bridges the distance. I use the coupler instead of the lovejoy set up they originally had. I don't know if that will be a problem in the long run or not, but so far it is working. Right now I am just cutting grass and high weeds.
The coupler did slide off on me, so I put a bolt (not pictured) through the hole which only puts the coupler on the edge of the PTO type shaft on the gear box, but it puts the other end against the new motor wall so it does not slide anymore.
I needed new hoses as the JCT hoses did not match anything in the US or Europe (guess where it came from).
I bought both the motor and the coupler from
www.surpluscenter.com for about $400 with shipping and tax, plus the new hoses from a local hose place. The parts I bought are item numbers 9-7078-160 and 1-2459. Surpluscenter sales support were very helpful. Ask them if the motor comes with a longer shaft version.