just for info purposes, im going with an IB5 which i know is basically a BC.

It fits to zetec block same as others, but i bought it with a group n gear kit from m sport and an LSD. supposedly stronger gears and better ratios.

I plan for max 220bhp. Considered other boxes but its a good compromise cause i dont want to start cutting up the wings and losing the original body shape under bonnet. Im fussy