i need to know the thread size and length of the bolts that hold the intake plate to the head, i have to install another set of gauges and want to make a "boost bolt" but cant remember for the life of me what the size is

 

Crap, I didn't see this earlier, I've got plenty of them laying around to measure.

I want to say its an M8 x 1.25

 

i was thinking that's what it may be, and about 1.5 - 2 inches long right?

 

Definitely not 2".

1.5" is about right, maybe 1.25"