Need to rebuild my 727. STRONG

:happy1:
It would be nice to know some definite items to change, we know to get a billet drum, bolt in sprag, extra clutchs and steels etc, but are there modifications, machining, drilling, milling etc, definite go to items etc, as the OP and myself for example live outside the US, ya'll must understand its not just a case of giving x,y or z a call, or if its not right return it, those two factors are expensive so we need some good sound advice please from those in the know.