My name is Steven highet and I recently move to the usa from south Africa what we basically look at out there when turbo charging our cars is,

The numbers not the parts
Compression ratio
Pistons
Feul management (After Market ECU)
Dynoed and Tuned 100%

Look at rated power on stock parts and work out what power you want to make then see what will need to be changed. You don’t always need 600hp rods when all you are looking to make is 350hp. You don’t always need a T3/T4 when all you are going to be boosting is 8 psi you could get a turbo match to the power you want to make.