Which Turbo????
 

i am uprating my pistons and rods to mahle forge pistons and manely steel rods with a 1.3 cosmetic gasket. i am thinkin of changeing the turbo while engine is out which turbo should i got for the car is a uk turbo 2000 1999 reg. if i get a tdo5 will it make a difference? also do i have to get a actuator for a tdo5 or will actuator fit off turbo which is on already? do i have to get a top entry or side entry turbo or will any fit? its a top entry on atm? any help please?