AE86 Cusco RS LSD, Crossing My Fingers

Goodies!

It's not (yet) mine. My workshop offered it to me when i told them i was looking to put LSD on my Charmant. Apparently, one of the workshop's customer bought the wrong type and couldn't fit it to his KE70 so apart from how the box looks, it's actually brand new. He did replace the rear axle with one from the GT version. I don't know much about KE70s but the GT version had DOHC engine, most probably 2T-G. I can only guess that it also came with T-series axle.

I tried to figure out what car this LSD is for and here's what i got.

See the 6.7 writing? It's the ring gear diameter. A T-series comes with similarly sized ring gear. That's good news for sure. The only thing left to do is to make sure whether this is for Zenki or Kouki T-series. Hopefully it's Zenki but the 131 F2 marking told me it's not.. *sigh*

131 F2 series are Cusco's 2-Way RS-type LSDs and sadly this pdf from Cusco explained that it's for Kouki AE86 which is not what i need. I need the Zenki version as i am going to fit a Corona RT132 T-series diff in and it has the same half shaft diameter as Zenki AE86.

Ah well, there's still the minor possibility that it's the wrong box and it's actually a Zenki AE86 LSD. LOL one can hope, right? All i need to do is get me that Corona axle and try to see if it fits. Counting the half-shaft insert splines didn't help as both Zenki and Kouki axle have 23 splines, only the diameters are different. Sadly, i didn't have the tool to measure the LSD's half shaft insert diameter as it was too deep for my slide ruler to measure properly.

If a Corona RT132 half shaft fits, i will surely pay for this LSD. The price offered for it was cheaper than what i would have to pay if i order a new one and i also won't have to wait two months for it to ship from Japan to Indonesia.