The "T" in 336T stands for "Texan", and designates the straight grip stock.
I know it is sacreligious to talk about putting scopes on these types of cowboy models, but here is a great big secret: When you put a scope on a Marlin having a pistol grip, it makes the rifle feel "clunky", because the overall profile of the rifle is too tall. BUT, when you put a scope on a straight-gripped Marlin, the rifle remains fast as lightening and a joy to handle.
Just my opinions.
Paulie