The different companies all wanted to produce a different kit. Scientific kitted the Victory. EVEN THE magazines got into the mix and that may explain where the 3/4 size came from. I just don't remember which one it was for sure. The Scientific Victory spans 32 inches. Korda's Wakefield was a lot bigger but I think around 55 inches or so. Hope this helps.
the one Im referring too was kitted by R/N and comes with a one bladed prop plans say 33.5 span,which is the korda victory span, I think the full size korda wakefield was 45 span but don't quote me, I can check with holman