a new block will be benificial specially if ur gonna go mad with it. If your only going to turbo your car at mild levels it may be easier for you to buy a block thats readyie a turbo block from an escort /fiesta. u wont need to change compression or worriy about drilling holes for an oil feed. Although its not as bad u you may think. Go escort route you,ll still need a coil but u want the correct dizzy from a esc turbs. it will be a coil pack set up if you go the fiesta route. FRST is efi , esc turbo is mechanical with the red fuel lines and metering unit.