Buddies with a tow company are the new owners of a rolled 2003/4 dodge van. Motor sounds great and we're thinking of putting it in an early car w/a push button 904. Want to retain pb feature so using the later trans is not an option. Other than the adapter for the converter snout, any problem bolting newer motor up to this early trans? Will 273 exhaust manifolds bolt up to a late small block? This is looking like a good, cheap way to go fi/computer. Thanks!