Rakey is right - not too often that I agree with Martin

Your head and your wallet will need to rule your heart.
There have been a couple of threads on the issue of converting a car from RHD to LHD and vice versa. So much has to change arround the dash, bulkhead fittings, top scuttle, wipers, looms etc, etc, etc, that it becomes way too expensive to consider.
Freight cost is not too bad as you could ship it in a container and this realtively easy element.
Complying with US registration laws will be your next problem, rapidly followed by insurance issues and cost.
Best bet is either buy one over there or do an export purchase here with delivery in US.