you do know that has nothing really to due with how the turbo will ruin your internals right lol. i wouldn't run over 8-10psi on a stock engine, even that could EASILY blow it after a month or two if you drive it hard. i'd say if you can afford to rebuild the internals or guy a new engine by the time it blows, buy a B18 now and buy a turbo in the time it would have taken you to save for the new engine.