I got plans for this seat.
Stupid Blogger auto-rotated image & I don't know how to fix
Subaru R180 27 spline to datsun 240z halfshaft adapters
2006 STI 3.54 R180 LSD
Change the input flange and it's a direct bolt in
as long as you have the Beta Motorsports half shaft adapters
Adapters & LSD mated up
Up close and personal
Seller claimed that LSD is 3.9
But I know for a fact 2006 STIs came with a 3.54 rear r180
The ratio of the center diff in the STI theoretically made the rear diff a 3.9
Without the center diff, the r180 is a 3.54
I currently have a 4.11 open r180 out of a L20 Fairlady Z 2+2
With the new engine, I'm in and out of the power band in no time
Im hoping this STI r180 with the lower ratio will keep me in the power longer
&
speed me up in the long run
Regardless the LSD will be a vast improvement