i put a front hitch on my FJ40, and had a motorcycle "sled" on the front with my mtn bikes on a rear hitch bike carrier. +1 on front mounted hitches being awesome.
the Kuat hitch bike carriers are the best in the business hands down. expensive, but the best build quality, materials, and customer service. i've bend shit on mine backing up and they sent me replacement parts free. their 2 bike has a 2 bike extension, incredibly easy to use, the best bike...
i think i might do a mockup in plywood, then make a vacuum bag and make my own carbon hood. i've made most of a 911s body panels in carbon, this has to be easier lol.
this is why i plan to have 2 sets of wheels/tires. i do that with my fj40, when i travel more then 30 mins i jack her up and swap em out. a world of difference if you have the ability/space/$$