When I lived out west I used to Import landrovers from the UK, the rule of thumb was 25 years, this allows you to pass the requirements for DOT and emissions. Its a rolling 25 years, I also used a customs broker to handle the paperwork on the US side, bout $300 per unit, Ro Ro to port Hueineme was around a grand on Wilhelm Wallenius, they also service the east coast, shipping is calculated by cube , not weight, smaller you can make it the less it cost, I used to fold down the windshield and remove the door tops and tilt bars, stow them in the back, and reassemble stateside. Pilfering, yes , at Southhampton I had a set of seats fuelcap, and towhitch pinched once, more an annoyance than anything else. Make sure your Uk shipper or agent lets you know what its going to cost to get it to the port , try and use someone who has done it before or it can turn into a bit of a goat rope. I have bought stuff on MILWEB out of the UK, sometimes prices are better than the dealers !