As far as the v6 guys who want to get the pro-system go, i did a quick search of the online sites that offer the "best price" and found one which offers the kit at a total of $622.19! I think that's the cheapest including tax and shipping, correct me if i'm wrong and post the link....enjoy.
ps. model number is 4220.780.
ps. model number is 4220.780.