i agree totally with the above post.

i would emphasize that using the factory studs is best. they thread into your aluminum head. the correct length of threads is crucial because you need about three diameters of the steel fastener worth of thread in the aluminum head to develop its strength.

(this means if you have a 10mm diameter steel fastener screwing into aluminum, the length of threads necessary to develop the strength of the fastener in the aluminum head will be in round numbers 30mm. if you were screwing steel into steel the 10mm fastener would require 10mm of threads, assuming the strengths of the two steels are the same).

if you use threads that are not long enough when you apply enough torque to hold the fastener you will strip out the aluminum threads. (this will generate a lot of extra work).

so take your time and find the correct factory studs and then meticulously follow the torquing directions. you will not regret doing it right the first time. doing it over really sucks!

dont ask how i know all this.

good luck

tom w

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[SIGPIC] Diesel loving autocrossing grandpa Architect. 08 Dodge 3/4 ton with Cummins & six speed; I have had about 35 benzes. I have a 39 Studebaker Coupe Express pickup in which I have had installed a 617 turbo and a five speed manual.[SIGPIC]

..I also have a 427 Cobra replica with an aluminum chassis.