Uprated head studs

[Diggers]

So it is just that they don't expand as much. Last time I asked the answer wasn't so decisive so I wasn't sure.

I know I will probably not have issues with a lifting head, but these would in theory make it a more reliable engine and would also mean it would be ready for bigger power in the future.

And Jake I will probably try and get a quote from them soon.

Stock bolts are stretch bolts so under high boost the stretch and lift the head. Arp are just high grade bolts so the don't stretch