How hard is it to swap in a 14 bolt?

[Ford Assassin]

Hey guys. Right now my stock '69 C10 has its original 12 bolt with 3.08 gears and peg-leg open diff. I was planning on swapping to 3.73 gears and adding a posi when I started thinking maybe I should just swap in a 9.5" 14 bolt instead.

When I still had my K5 I blew the 12 bolt all over the trail and swapped in a 14 bolt with ease and never had a hint of trouble with it afterward. However that was with a leaf spring rear suspension, not a trailing arms suspension like my current truck.

I am also interested in the swap because I also plan on towing an RV in the near future and don't want to worry about strength issues with my stock 40 year old 12 bolt.

I know where I could score a low mileage 9.5" 14 bolt complete with brakes, 6 lug axles, 3.73 gears, and posi for less than $100. Which would be hundreds (if not a thousand) less than rebuilding my 12 bolt.

My question is how hard would it be to swap in with my trailing arm rear suspension?

I am sure some of you have done this to your trucks, so lay it on me, what's involved?

Thanks guys!!