i have a fully stock 87TII, is it safe to turn the boost up, and or even adjustable?

 

its not adjustable, you'd have to buy an aftermarket boost controller.
its definetly NOT safe or recommended unless you have the fuel to back it up.
id say maybe 1 psi and thats it...who wants to run the risk of detonating or running lean.
u want more air, u need more fuel.
u dont have one, u cant have the other