Instead of the Mini Cooper headlights, have you considered VW Beetle or Mercedes? Both the old and new Beetles have round headlights; the older the Beetle, the smaller they'd be, if that matters to you. Some newer Mercedes have a round light with a bit of back-slope to them (no chrome surrounds though), where the Beetle lights are pretty much vertical. Seems to me like you're in for some bodywork to make 'em fit, no matter WHICH kind you finally chose!
Oh yeah, and: welcome to the forum!
