[intellibomb]

so i was searching for transmissions on ebay, and came up with a 2007 WRX 5spd with an R160.

as we all know the sti 6 spds come with the R180.

besisdes the final drive, what is the difference?
is the limited slip different?
is the R180 different in size, and if so, what is the installation like? (mods?)

I remember tomssvx and others praising the r180, and i am wondering if the extra cost really brings equivalent extra benefit.

thanks