Confused About G50 Gearbox Starter Mounting Studs
 

I am thinking of buying a different G50 gearbox for my '87 Carrera.

I have not removed the gearbox or starter before from my car.

I'm confused because I've seen pics of G50 gearboxes that have 2 studs on the gearbox for the starter barrel nuts taken from a thread here on the forum:
http://forums.pelicanparts.com/uploa...1306693691.jpg

But I've also seen other pics of G50 gearboxes where only the lower stud is in the gearbox. The other side is just a hole that is not threaded, like this pic (also from this forum):
http://forums.pelicanparts.com/uploa...1746065330.jpg

What's the deal? I don't know what I have but for the one with only 1 stud how is the other side of the starter held to the gearbox housing?

The one I'm looking at buying is a G50/01 and it only has the one stud. In my '87, per the PET, there is only 1 stud:
http://forums.pelicanparts.com/uploa...1746065647.jpg

Can anyone shed some light on this?

Isn't the upper stud for mounting the gearbox to the engine. The stud is very long and threaded into the block.

^ Yes. When the trans is mated to the engine you will see the stud. When the trans is removed, you will not see the stud.

OH!!! Of COURSE!

Good god, how dumb am I?

Thanks guys!