hm, not on a rst mate. as the non lsd box(3i and 1.8 diesel? ) that people use, dont hold as long as an rst box

the torque destroys the box.. and the 3i box that most people use is easier to rip apart

so, go for a rst box

but as i am just a stupid guy from norway.. i dont understand the question... how much psi the box will take


as last i checked i did not run the turbo true the box