Horsepower with mileage options

Well that was probably pushing 30psi which you all diesels have to have done. If the stock waste gate is not adjustable they might make one that is for it. And set it lower like around 6-8 on stock internals maybe 10 max
Lol, yeah despite telling my son not to add more boost than the factory bolts can hold. But what does pops know. It can take all he can put to it now. Thanks to all you guys for the input of ideas. This will really let us pencil out a solid plan and see what best works for my sons overall. I dont know my son will turbo on his 318, but I can see my son turbo the big block duster.