G'day Lenny,
I don't think there's any real prospect of finding out how many different Godfrey's models there were. Or even how many different storebrand names there were! Any Victa production records for that era are long gone now.
There's no way of saying for sure if that Lancer is a 'bitsa', really. All that can be said is, that it could well be original, as the decal style and colours match, on the base and cowling.
I presume here, that you're referring to the one in a couple of ODK member
vccomm's past threads - there are some good pics:
https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=41043https://www.outdoorking-forum.com.au/forum/ubbthreads.php?ubb=showflat&Number=37870