I would stick to the zetec and head you can use a 1800 cvh sump but you will need to bash out the front a bit on one side to miss the oil pump so it meets up with the sump bolt holes as for the pick up 1800 one needs bending a bit i no when i went from silver top to black both sides of the front of the sump needed bashing insted of one side and the pick up needed warming up and bending more cos the oil pump is different. as for ignition you can use hcs ka or fiesta ingniton and coil pack i used this when i had a dgas on mine and worked well. as for engine mounts you can easly make them up ,clutch you can use 1800 flywheel cos its lighter ether get it machined for pinto clutch like mine or use i think 1600 zetec clutch dont forget to put a spiggot bearing in the crank as well,the only thing that costs money is the water rail but you can make that up with a bit of savvi and also exhast manifold.