You are in Edmonton... I've got clinics in Cgy on 21 and 22 July and then Fort Mac on 28/29 July and that latter clinic is a TWO day venue with lots of shooting and coaching involved.
No mods are necessary, really. Should you desire to tighten things up, that's when the M14 lends itself to all the tweaking and the addiction

begins!
I just bought a new shorty last week for my own teaching purposes. I wanted to play with the iron sights. They worked OKAY, but I want total reliability so I replaced the rear sight knobs with M1 Garand knobs (elevation and windage) from Ebay.
Then I wanted the PING sound from my M1A, so I knocked (big hammer) off the existing factory Norc flash suppressor and replaced that unit.
I put lots of .308 ammo through the barrel so, I wanted a USGI dimensioned gas cylinder. Your Norc gas cylinder will go several thousand rounds, trust me. Once anything breaks, I want the supply (brownells) of gas pistons and other parts to be available. So I replaced the gas cylinder (you don't need to do this, but I prefer it) with parts from

Brownells. I know, they nail me for shipping, but I want some M1A parts on my shorty.
Yes, the factory Norc front sight mounts up nicely on the M1A flash suppressor that is on my shorty right now. Soon... a USGI glass stock for it's role as a truck gun, even if I'm not manly (or rich) enough to own a pickup truck. My Rav4 will have to suffice as a manly (wannabee truck) vehicle.
So, you have to replace anything? Not really!
Cheers and happy M14 addiction....
Barney