I have the tank in the trunk, 50% meth is for sure safer but on a stock block running sometimes high boost you cant risk a small missfire or knock so you have to accept the danger of pure meth, So i run 100% and its doing fine till now of course i dont run high boost all the time because its tuned on 100% meth and ms109 fuel, its usually on 11 to 12psi on 93 pump and 100%meth, I am sure its not going to last but so far the stock block is strong as hell .
The last vid is a 40th anniv 370z not the nismo in the first couple of vids i posted, The 40th anniv 370z is equipped with gtm stage 1 on 10psi no meth or anything pushing 480whp on a mustang dyno which is 500+on a dyno jet, a c6 is easy to kill with this set up no need for the white nismo which pushes approx 550 to 600whp