67 Dodge Dart Gt

I have a 273 in my dart thats locked up and wanna put a 318 from a 70 Dodge Motor Home in it that has 69K and runs good.I am not a mopar guy but looks as thou the water pump sits higher on the motor home motor will I have to change that and the timeing cover housing and what else will I have to change for it to work.I also got the trans with it will that work also.
Thanks Olin