Hello.. have a gas Class A Winnebago 35' w/ a 454 workhorse chassis and ..too slow up hills and so much harder to work on (acceptability to working on them ..like the old days... can't work all the time on your belly.. We all can fix it ...but can't get to it. I am now looking for a new coach and will be diesel pusher and at least 500 hp ...you and the coach will not look at A HILL and down shift 3 times prior to the hill and you will get there, see you at the top in 2017 w/ new or used diesel pusher.