You're right, that tranny should be the SM465. The easiest way to tell is if it has reverse down to the passenger side. I am also curious to know what SM stands for.
On my option sheet, the RPO code for my transmission (SM465) is M20. I am confused by this, I thought the M20, 21, and 22 were car trannies. Maybe someone else can shed some light on this subject.
