Well if you lathe them down they do fit a base model 5 speed... I can say with certainty now. LOL
A smart man woulda measured and then cut them down. I, on the other hand, am not a smart man. After many days of cut half a millimeter off then take the spacer home try it, then repeat the next day. I finally got it down to size. Gotta re-drill the bolt holes though.
So cheaper than the $185 kit yeah, but if you have a lathe just turn out a piece of aluminum and cut out the middle man.