Mk4 Rick

Hi ive got the mk5 fiesta with the 1.3 endura e engine its a Y reg 2001 model with the digital clock with no rev counter I would like to stick the 1.6 zetec s in to the mk5 and was wondering which loom and ecu do i need.Is it just the engine bay loom i need and is it plug and play straight in to the fuse box.Im after minimal fuss conversion really.Ive heard storys about you carnt reground the crank for new shells how true is this?Can i have the crank lightened and balanced with a knife edge crank?Any advice help would be great