K20 Chassis

[85square]

Hey guys, long time lurker but i don't post much so ill use this as a little introduction thread i guess. I own an 85 k10 thats in pretty good shape for this area. I live in NY so its hard to find clean old trucks. Ive had it for about 3 years now. Haven't done much to it besides rims/tires and swapped the old 700r4 for an sm465. I recently decided to go all out and build my truck from the ground up so yesterday i went and picked up a 3/4 ton chassis that i plan on building how i want it then just drop my body onto it. So i got it home and then realized that there was a crack that was previously welded at the rear spring mount which seems like a very common place on these trucks. I'd really like to use this frame because it is better than the one under my k10 but I'm not sure if its a good idea with a welded frame. Everything else besides that looks good, especially for NY. So my question is would you use this frame or scrap it? Pictures are from my iPhone so they're not the greatest.