They often are, in medium and heavy duty applications.
Allison transmissions are often mated to Cummins engines in medium- and heavy duty trucks.
The Allison 1000 which is mated with the Duramax diesel
yes.
Your Neon is front-wheel drive and doesn't have a transmission, it makes use of a transaxle mated to a transverse-mounted (sideways) engine. A Dakota is rear or four wheel drive and uses a conventional transmission mated to a conventionally mounted engine. Totally incompatible.
H-series engine mated with a B-series transmission using an adaptor plate.
The new 2011 Ford Super Duty. It has the 6.7L Power Stroke Turbo Diesel V8 mated to a 6-speed Heavy Duty Torqshift Transmission that doesn't have to be serviced until 150,000 MILES! 'Diesel Power' magazine recognized the new 6-speed to be the 'Allison Killer!' This setup makes a class leading 400 horsepower and 800 pound feet of torque.
What is in it ❓ Well, it has a 3.5 Liter 248 h.p V6 engine mated to a 6 speed automatic transmission. Want more information then click the link and read.
Some applications use a spacer between the engine and transmission to give proper clearance in a situation where an existing transmission is mated with an engine that it may not have been designed for. I don't know of any plates on the motor mounts so im guessing that's the one that you are asking about.
Yes, with heavy modifications. It wont be just a drop in fit. the engine needs to be mounted, mated to the transmission, wired up, etc.
No
Most commonly it is the ax15 5 speed mated to the 4.0
Tamed is an anagram for mated.