You know you need new front shocks to use those a-arms, correct? They are a long shock arm, so the stock shocks won't work.
Could always get front a-arms and shocks and then revalve the stock rear shocks, would be a budget setup and should be a good improvement over stock.
EDIT: Just saw your other post and see you have Evol's on the front. After looking at Houser's shock specs, they may just work, would confirm with Houser that the extended and compressed lengths for the shocks you have would work with there arms. If they do, my suggestion would be to get the arms then revalve/respring the rear shocks. For the rears, check with Ceballos, he can recomend a guy in SoCal that can do the work.
the fox floats were meant for the houser arms when i bought them. They said there right. I just have to decide if i want new a arms for the front or get rid of the stock rear shocks and get fox podium x's.