Sadly not bookable if they do. I have the suspicion that all flights coast to coast are likely to be A321's or 737's for the main part with the odd 767 thrown in the mix. I last did the journey regularly in the mid 90's and then you'd feel hard done by if it was a 757! 747's, DC10's MD11's, L1011's was the order of the day. Mostly half full and you could stretch out on a whole middle row.