I love mine, but haven't driven a dog-nose or rear engine. I've got a Cummins diesel 555 ci engine, it's a bit loud, but not overly so. Once I get all the stuff in then I'll have a better idea about how loud it is--right now it's empty and like a big echo chamber.
But it's coming along nicely!
Great bus. Easy to drive, goes hiway speeds easily, handles like a big Ferrari.
1981 Bluebird All American