Well I said "I think" they came that way from the factory, and maybe I was wrong.
There seems, however, to be some fudging going on about what constitutes a Grand Sport (at least on this forum). Is anybody/everybody saying EVERY LT4 engined 1996 IS a Grand Sport?
I have the MSX International "restoration package" on my desk right now for 1996 Corvette Specifications.
It says the Vette coupe had an LT4 "option".
It lists the Vert - no LT4 option
It lists z15 - Collector Edition - coupe or vert - LT4 option
It lists z16 - Grand Sport - coupe or vert- see following
ALL Grand Sports required LT4 engine, coupe or vert, Admiral Blue w/ center white stripe & red hash marks, chromed Grand Sport emblem on front fenders, rear wheel flares (coupe), black brake calipers w/ raised corvette lettering, 5 spoke rims, perforated leather sport seats w/ grand sport embroidery, black or red/black interior.
To me putting Grand Sport emblems on a car that just has the LT4 engine is .................... well you decide what to call it, as for my car it's got an LT4 engine but I don't call it a Grand Sport.
If you think above description is wrong - cite your source.
PS: All this chat is extended in a friendly, information sharing sense. Isn't it fun going back & forth about the car we are all so passionate about?