All I should know about suspension before any modification

[damusto]

First I am very happy to have U here NoHachi. I'm counting on your knowledge a lot.
Of course You're right, some of this data is almost impossible to find.
However, sometimes they can be measured, weighed or determined empirically in a different way.
Therefore request - for a little bit more optimism.

I'd like to start from what we have...
I have springs stiffness rates for stock streed car and 2 TRD variants racing/rally group A.
(which can help to develop thread cited above)
But I have to scan these tables to post them here first.

I also have diagram of ae86 chassis and rear axle (need to scan them too)

The most wanted for now, are suspension drawings.

Lets forget about the bumpstops for the moment, and lets see what else do we have.