Header Bolts

Are you trying to use the stock header bolts??? If so, there is no way. The bolt size is 3/8ths x 16 and you want about 3/4" long bolt. The head of the bolts I have are 3/8ths, but a few worked themselves out so I bought some from Pepboys but the head on them is 7/16ths, both much smaller than the factory's 1/2".

locking header bolts might not be a bad idea, either. now is the time to do them. good luck.