the 340 fan setup might not be to hard to find. alot of times the 318's with a/c had the same fan and clutch as the 340's did. i haven't looked to see if that is the case for 73 or not. i do know that is the case in 71-72. so if the shroud works for the current setup the notch those blades back. you should be able to do it. just take your time and do it alittle at a time. good luck!
