A blind guess.
Ride Height max/max
Spring Max/Max -1.0
Shocks 8/4
Shocks 8/4
ARB 6/3
Camber 1.5/1.0
Toe 0.00/0.00
Downforce should be the minimum you can use while effectively turning in the draft without having to lift.
Gears should be set so that 5th gear is to the left, 6th gear is to the right.
Final is then set, so that when by yourself you hit Peak HP RPM in 5th gear.
Then 6th is used for drafting.
That was a pretty wide open request. Plus, that was your first post on this site. There is no wonder as to why you did not receive a response.
First, welcome to GTPlanet.
Second, the stickies at the top are your friend. Check out the one that contains links to every tune from this site. Is updated through a couple of months ago.
Third, when looking for a tune, and when you cannot find one that fits you from the sticky link, try adding some more detail. What type of car, what tires, what HP or PP levels, etc.