I have a chance to get a s300 for my truck I was wondering what kind of boost I would get and if I would need head studs.

 

anything over stock turbo studs are good investment

 

I've ran 62mm, 64mm and 66mm turbos on stock bolts and gasket and have had good luck. I've kept my timing conservative though. The 64mm has been my favourite so far.

 

If its a 57/14 s300 like my super B is, youll prob see about 31 lbs with your fuel.
I put in an adjustable boost elbow and have mine hitting 35 lbs.
But with my new Smarty, should see a little more then that. Id top it out at 40 lbs. That'll be safe for the turbo, and stock head studs too. Based off eveything Ive read and personally done that is. So.. IMO.

 

How good is the gauges on the j/a. I have seen 39psi with my stock turbo when I turn it up to 6.