Good afternoon... read and re-read your March post re: the Mustang 2 pc seat..... I have opportunity to buy one at great price, and it also includes the driver backrest. I'm hesitant, though, after reading another poster saying he couldn't get his to fit, and had to return it... This opp. won't be available long, so if you could share whatever you can with me beforehand, I'd be greatly appreciative!!