its not hard to do a rebuild, the engine has markings on it for the timing settings all you have to do is line markings up buy a haynes manual it has all timing marks shown in pictures and it takes you thru step by step, it also has all the torque settings for parts like the head bolts, main bearings etc etc wich you will need, also mite need an engine jack if you wana take out the complete engine, i no on the fiesta turbo to get the engine block out the gearbox comes out with it as 1 piece the low comp pistons are a deffo (but not cheap) it will able you to run higher boost and not to sure bout the spacer plate to be honest, the main thing is to take your time or if you can buy a complete engine 2nd hand and do all the work to it then fit it and break your old engine and sell it or and you should maybe look into uprating your brakes to, 200bhp anit cheap but done rite it will be worth every penny hope this has helped a bit more