you can use the c 4.1 front one way in the c4 or the x ray one or even lock the front diff bye taken out the balls
this is how i ran my c4 up untill the start of this year
2mm toe out in the front 2 mm toe out rear
45 wt oill all round
white springs
2 mm drop
1 mm camber all round
fornt one way mid one way locked
middle hole on shocks