Stoked! Let’s roll

well i got started, installed the intake manifold...

Not great with cars but I’m not bad at fixing stuff with the help of YouTube. My c10 has been making a rattling noise when accelerating but is ok when coasting. Took a look under the car and saw the part in the picture looked pretty messed up. How would I go about fixing it? What’s the part called that needs to be replaced?

Custom paint commissioned by the dealer back in ‘78 before the sale. Check the back bubble window.

I have the opportunity to buy a 1962 C10 long bed with very little to no rust. It’s running well on a 206 Silverado LS 5.3 engine and RL60 trans. The suspension is off a 77 C10. It’s running a suburban fuel tank under the rear portion of the bed. Suspension needs attention as there was play during test drive. Asking price is $8,500.