Can you say "waste of money"? It's necessary to undo the 2 rear bolts holding the subframe to the chassis. Then take a really big pry bar and pry/bend the subframe down at the rear until there's enough clearance for a helper to remove the bolts/brackets. Then cut/grind the bolts about 1 inch shorter so you can get them back in without having to pry the rear portion of the subframe down again. Oh yes, it may also be necessary to grind down a wrench so it will fit between the frame and the bracket for tightening purposes. Also, adding poly bushings to the front adds understeer. Normally, this is the opposite of what you want. However, to each his own. Suggestion-Do your homework before dropping your hard earned $$$ on mods.
