Straight Axle / British Columbia ... Legal?

Planning to put a Chevrolet drop axle ('49 1/2ton) into a '57 Townsman.
Are there any legal implications with a swap like this?
Anything like.safety inspections, running on the street, insurance issues, etc.

Any and all ideas about this swap would be much appreciated .....

'57 will be powered by a 440 Dodge, with a glass 'flip' nose. .....

 

Fly at her, large modern trucks use straight axles, so there should be no problem on any of those fronts, as long as your drop isn't below the scrub line.