Quote
Will a standard victa fuel hose/tap from ebay do the job for the Imperial, and can someone share a pic of where to attach a clutch cable and fuel hose?

Hello Bolt
Yes, a standard plastic fuel tap should do the job.

The clutch cable may be covered here:
https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/72511/victa-imperial-c1966-1978.html
https://www.outdoorking-forum.com.au/forum/ubbthreads.php/topics/58949/VICTA_SERVICE_GUIDES_-_1960s.html

Otherwise - search Imperial in the Blue Search Bar.

The Briggs engine is a modern replacement on the Model 45.
The model will be identified by number stampings on the starter tinware.

Quote
Lastly, there's an oil filler lid on at least one of them. Is one a 2 stroke and the other a 4?

Yep, the SB has a four stroke; the Imperial a 2-stroke.

The Scott Bonnar is a smaller machine at 14"; the Imperial is a 16".
The Scott Bonnar is the more rewarding machine to use.

Hope this helps.
-----------------------------
Jack