Rear Shock Mounting

[MikeandCheryl]

I am looking for advice on the removal and purchase of rear shock mounts. The vehicle in question is a 1972 K10 pretty much stock and pretty much beat. So i need to remove the factory rear shock mounts (riveted) and replace. Any advice on where to purchase? I will need some frame reinforcement in way of the shock mount, welding and/or gusset plates, due to some steel wastage. Guidance from anyone that has done this would be most excellent. Thank you.