The xx4 ticks every box for me I love mine.
Ive used this setup at a number of tracks and love it..
4wd
Front
Spring - Green
Oil - 30
Piston - Black
Shock Tower Position - 2
Wishbone Position - Middle
Camber Link - 3 (long on tower) with 1mm cut off the outer hub
Notes--- Modified steering link with 15'g of weight up front too. Diff used
Rear
Spring - White
Oil - 30
Piston - Blue
Shock Tower Position - 3
Wishbone Position - Middle
VLA - SHORT
Camber Link - 5 E
Wheelbase - Medium
Personally I like to run a diff in the front of mine with the clicker locked.
Optional Upgrades modifications
xxx-cr Rear wishbones and hubs
xxx-cr rear inner hinge pins with e-clips on no more flappy brace.
Green Belts all round
On the front spindel carrier file the little bump off where the ball stud sits so it is flush.
Run CVD's in the front.
E-speed steering rack
Alloy motor clamp
Long screw and countersunk washer on the steerign ball crank
Flip the rear pivot block dremel a small round in it for clerence on the out drives.
Change the plastic outdrives to steel ones. I used the xxx-cr one then dremmel a flat spot to allow to fit xx4 diff plates.
I run the stick pack down one side and i run about 150 grams of lead on the servo side and nothing on the battery side..
A