I beg to differ!

Many newer 2 stokers use exactly the same longer length plugs as the four strokers.

Case in point Tower Hobbies, GMS, Evolution, SuperTigre etc.

On another thread I posted pictures of the plugs included in the boxes with all of these engines in sizes from .45 up.

They made the same assertion as you, to which I responded with the picture.

After discovering this I've switched to using "Fox Miracle Plugs" ( intended for four strokers ) on all of my 2 stroke engines and I've have had MUCH better luck with them this way.

Of course I wouldn't stick a longer plug in a 2 stroker without first checking the clearances and comparing the original included plugs...