HO52 swap to 3.73 posi - go with 10 bolt or 14 bolt?

[customc20]

I have searched this out but have not found exactly what I'm looking for. I currently have a 72 C20 with a 350 / TH350 with an HO52 rear end with 4.10 gears and 31" tires. It has coil spring rear suspension.

I am going to switch to a 700R4 tranny with 3.73 posi (limited slip, etc) and 28-29" tires. Since I can't get to this gearing using the HO52, I'll need to change rear ends. I've been looking all over and have found multiple 10 and 14 bolts from 73-87 trucks.

I know I'll have to weld the spring mounts and panhard mounts on both, so that's neither here nor there.

I'll be switching the axle out to a 5x5 lug pattern and disc brakes as well. Each of these rear ends has different ways of achieving this swap (I believe).

My question is, which axle would be better to build up for street use. The 10 bolts (5 lugs) I've been finding are generally 3.73 (sometimes 3.42's) but non-posi. The 14 bolts (mostly 8 lug I think )I've found are 4.10 SF non-posi. What would be the best option, and which would be the cheapest option, to get to a 3.73 rear posi? Should I buy the 14 bolt and switch gears and third member, and potentially 5 lug axles? Or buy the 10 bolt 3.73 and put in a posi third member/center section?

The rear ends generally seem to be about the same cost from the people I've contacted around here.

Hopefully this makes sense. Thanks for your help