ok here is the difference you can get just normal spacers that you could make or you can get hub centric. hub centric are the real good way to go the best way and the only way in my mind. sure any one could take a piece of aluminum and drill holes in it and make it work. But think of why they make the other ones there must be a reason maybe cause the other ones non hubcentric are not very safe dude save your bucks and do it right i have seen these things go for like 150 bones so geesh just wait.
1995 VOLVO 850 Turbo
1986 Chev Camaro Z28 running 250 horse with just a stock motor and open air filter carbed.