got curious, lazy measured in the rack with a makeshift straight edge. ymmv, rubber ruler, etc.the fin boxes are further back on plasmic. 7 1/2" vs. 7 7/8" on lightbender. that's from tip of tail to the rear edge of fin box opening.
plasmic, 5’5, has the boxes at 7 1/2, with fins between 7 1/8 and 7 1/4
lightbender, 5’7, has boxes at 7 3/4, with fins between 7 1/4 and 7 3/8
my lightbender has the shallow swallow like on the varial site.