Mustang no longer makes VN750 seats. They are super comfortable, though. Check craigslist or ebay. Love mine, it's good for 12+ hour rides.
Corbin still makes our seats, approx $450. It has a backrest. I've never ridden on one, can't comment on it. People who have, answer: Does the backrest interfere with getting off the seat to lean through turns, sportsbike style?
The journey is the destination.
2006 VN750 (SOLD)
Red spark plug wires
Stainless Steel brake lines
Stiffer fork springs
Givi bags, Wingrack mount