Aircooled VW South Africa

I've done a search on this site for VWSA gearbox identification, but didn't get a definitive answer. I have the following numbers off two gearboxes:

Gearbox 1:
28
113 301 103
J

Gearbox 2:
16
113 301 103

Gearbox 2 comes out of my Beetle 1200 and has the short shafts, so I'm pretty sure it's a 1200 box. I'd like some help identifying gearbox 1.

You should have some letters on there as well ??

-- viewtopic.php?p=223889#p223889

The only letter I see is J.

The number you looking for should be a stamped number as far as I know to correctly identify the box

Should start with SF

Herman

Before I go crawl under the car, where would you find this SF number on the gearbox?

If my memory serves me right, its above the filler plug,

But not too sure

Herman

Thanks, I'll have a look.

I crawled under the car and found the following code underneath the numbers previously shown:

AC 4288796 SF



According to online sources this gearbox is for 1500 and some 1300 from 8/70. Is this correct for South African gearboxes? If so, I have a 1600 single port that I want to put in this Beetle. Will it be fine?