Yea you will definately be saving tha much weight between the k member and hood you will b good . .I don't kno much about blowers but heard and read great things from both those superchargers as well as paxtons. .good luck
the compression shouldnt b different its a direct bolt on kit specifically made for the stock applications and the pistons are still the same. . .but im no expert thaats just my 2 cents
i was told the fronts were 3.5inches hard to measure wit the tires on them and the rears are 10.5 and the depth inside the back of the rears are 6 inches. . .pm me back