Turbo question

I am building a turbo 225 and was wondering if you guys that say your running a stock slant six with videos on youtube are changing to forged pistons and cranks? I know that wouldnt be stock then but was just curious if there were any changes at all to the motor?

well u can change the pistons and rods to these
http://www.campbellenterprises.com/slant-six-6-performance-parts/wiseco-225-slant-6-six-pistons.php

but i have seen a guy with a stock slant bolt up a turbo and run 13's...

as for a crank i think somebody yrs ago had a run of billet cranks but i could be wrong