lol.. id stick with 10psi and alot of bolt ons till i built if i were you?
Theres alot of factors that cause a motor to blow. To be safe Id keep it under 415 or so. Ive never heard of anyone blowing it there. Mine blew at 435rwhp fyi.Unix is at 470 and I "hear" people being over 450rwhp and around 500rwhp.
435rwhp it where I would stop