Light goosenecks?

Any idea who makes the lightest goosenecks? I'm looking for about a 10K gross trailer that weighs in around 3K or less. I haven't decided on fendered vs. flatbed. It will be used to haul a low clearance 3500 lb race car and a 4x4 separately.

Any recommendations on moderate or higher end matching hitches for a 72 F250?

Thanks

Chris