I have a rolls royce motor and tranny but how can i tell what they are?

I know it is a rolls royce motor and tranny i am just trying to figure out what tranny i have all it has on it is PA#651689 and PA#653047.|||Rolls Royce make engines for tanks, trucks, airplanes, ships and cars...I assume from the attached transmission (gearbox) this is an in-line engine for a vehicle. I assume you have the name Rolls Royce on the Cam Covers...and that is how you know it is a RR engine. If it is Petrol...it is almost certainly a car and if it is diesel it is probably a heavy vehicle. The Cubic Capacity should be on the block somewhere...CC not Cubic Inches. How many cylinders does it have, is it a straight four, six or V8? Is the gearbox manual or automatic, 4, 5 or 6 speed or even 4x4... need a bit more to go on.