s13 coilovers (8kg spring) are in the rear now. it was literally this easy to make it work. i left all the settings identical to what was in the silvia. although my mates wanna see more low lol, i think its perfect.
i also bought that disc brake rear with the r230 LSD from alan/MY308U. went in absolutely sweet. the k-frame was already modded to fit the diff on all i had to do for the diff to fit was drill some extra holes in the 210 moustashe bar. i used the r30 one that was already attached to the diff as a template.
take my word right now though, you want to be taking that bar to somewhere with a drill press to get the holes done. as that bar is crazy-solid spring steel and it destroyed a corded drill and 3 drill bits before me and my mates gave in.
another cool note: i didnt know this until i got it, but that diff is actually 9 inches baby!..... around..
tyre specs: 225/40 R18. fits nice and probably would foul on the guard if the coilovers had more than 2 inches travel. but they dont lol.