Hate to do it

Ok when I am wrong I say so, I am sorry for not taking that comment about "Get out now" as a joke. With no facial expressions to see, voice inflection to hear, just reading typed words, a lot can be lost in translation. This is my very first Mopar, and I am still learning, what to do, what can you do, what shouldn't you do, etc. etc. My plane is to rebuild my little 318, new heads, valves, etc, I want a little more get up and go, nothing major, from all I have learned on here, 360 heads, block zeroed etc., seems like a pretty reliable way to go. I can find all the parts for the motor, but I want to make sure I have a rear end before I do the rebuild because I would hate to have that done, but no drivetrain so my car just sits till I find one. I am one of those, get all the pieces before I start kinda guy. I was just trying to find out if anyone else has used something other than Mopar parts and what the out come was.