I shipped the upholstery for my Tristar to them last Winter. In my case, the motor box and the side panels were the biggest parts and made the shipping about $300 each way. The crate was 4' x 3' x 8' and I had to rig an extension to let the side panels hang out a little. I decided to go with a rigid box on a palate base so I wouldn't have to worry about shipping damage. If you wanted to go a little cheaper, you could just wrap everything in plastic, put it on a palate and band it down.
There wasn't any problem installing them on my boat, everything fit perfectly.