upper plenum bolts?

zacks gn

Oct 6, 2011
Anybody know where I can buy these bolts from ?? Looked at highway star and kirbans. Nothing listed.
ARP is what I used and got them a little longer to accomadate my power plate
I used ARP. 661-1003, I can't remember how muck longer they were. I know they can be used with or with out the plate and give you more thread contact