I have a 6'6" 21" wide Becker (thruster shape but a little on the wide side) and it fits but just barely. I can even get it in with my board bag. Trick is to slide the seat all the way forward, then recline is all the way back. Then put the front of the board into the footwell. It basically fits in like a person reclining, so it doesn't block the view anywhere. I'm sure a 6'0"-6'4" would fit just fine.

 

Kinda hard to get good pics of this. This is a 5'10". Width is ~18" I think. Fits like a glove. But yeah, just get a old shitty truck. or use another, "lesser" car than the FD