i.ve got a loom for it if you do go ahead , allows it to use standard fiesta electrics and run an mfi turbo all lebelled and ready to go,
i started the conversion and then sold the car but being honest its not that bad once you get started
the easiest way to mount the engine is to use standard rs engine mount and a special sleeve nut that fits through the eye of the mk1 mount and down to the threads of the mount
mk1 fiesta is a good site aswell, guy called panko recently had one for the track it was less hi tec than bombers but more of a sleeper at the same time
would shock a few people
good luck