Ah if no one can answer that right away, I do have a set of those exact pads ready to go in at home (will be like 4pm when i can find out but!) hopefully someone has them faster to help out but!
I'm not a huge dude by any means, actually a skinny little white kid, but I found with my luxury seats that around brisbane and stuff for daily driving = super comfy. I have no problems with it. BUT...
Ah SOME installers would carry them, would all depend on who you go to. However, if they dont, places such as drift workshops and garages like that definitley stock them. Up here in QLD Option1 stock...
Nah I install everything myself, did the 4 coilovers, and lowered it in about 3 hours of fiddling. its really not hard, the fronts have 6 bolts, the rears have two, just need a long piece of metal...
Look into DGR man, mine have held a god deal of punishment already, seem the goods, are solid and well made, cost me $900 to my door rather than the expected $1500 or whatever else of other ones such...
Heres how it sits now man! I lowered it a smidge more, to as low as possible (I literally went into uni at 1am, parked over a speedbump and wound my coils down until the clear by 1mm....) so its now...