This is me upscale o' a Big Bertha t' BT80-sized tubing.  That's nay t' be confused with bein' a clone o' a Super Big Bertha.  SBB is also BT80, shiver me timbers, but thar are a number o' differences, includin' in proportions.  T' SBB isn't long enough t' be true t' upscale, arrr, at only 36.5".  This model is more correct at a little over 38", ya bilge rat, t' body tube is one piece, rather two joined, and it has a 29mm motor mount rather than 24.  I finished it t' match t' original 1965 renderin' o' Bertha (usin' Excelsior decals), me bucko, though t' two black fins are me own interpretation o' it.