http://www.motorsport-wiring.com

Ryan from these very forums could do it for you. (great workmanship, I have one of his looms in my escort)

A great loom is not cheap, you should expect to pay reasonable money, an engine loom alone can cost upwards of £300 upwards depending upon what it has, so you should expect a full car loom to cost a bit more.
Remember some of the plugs may no longer be available and as such they may be forced to use 'old plugs' same could be said for the fuse box