Help Required: Slant 6 Engine Identification

Hi Dan, thanks for the reply.
I do realise both engines were available VE, VF, although I'd question the 5-plug blocks commencing with VF's because our usage of slant sixes ended with the introduction of the 1970/Hemi/VG range, with exception of maybe some utilities and export or base-spec cars.
Thanks also for decoding the engine number, but from that information are you able to identify what horsepower my engine is?
You've now got me worried about the need for a crankshaft bushing, because even though the car drives great, there is a worrying dull rattle from remarkably close to the torque converter that I have never been able to remove. Checked all the obvious, had the sump off whilst the steering and k-frame was off, big ends bearings, main bearings, flywheel/converter bolts, so on, they were all good, but the noise is still there.
Guess what's now at the top of the To Do List?
Lucky I'm a Fitter/Machinist I can do this easily, but I don't suppose anybody has a dimensioned drawing of what is actually needed so I can pre-make the required part?