If you are using the OEM wheels, make sure the new bolts are BALL taper...the taper is rounded. Another type is tone shape (the taper is straight). very hard to notice the differences...but be careful. The cone shape taper will not have enought surface area mating to the lug holes... It looks like the one pictured is BALL taper. (I changed this for ANDREW)

You local tire shop that specializes in custom wheels (meaning they know what they are doing) can get you the correct length and taper bolts...