Newbie with questions

[MauriceR]

Picking up a 64 stepside shortbox that needs lot's, found a rolling chassis from a 77 Blazer and wondering what can be used to upgrade the 64
I assume the front suspension and cross member should fit pretty easy which would give me the disc brakes also
Would the rear end be a fairly easy swap ?
I read somewhere that blazer gas tanks will fit between the rails, anyone put one in

That's it for today but will have lot's more

[markeb01]

I'll defer to other members that are more knowledgeable for your answers. Just wanted to welcome you to the forum!

[Captainfab]

Welcome to the forum

As long as that K5 Blazer is 2wd, you will have the parts you need. To use the 12 bolt from the Blazer, you will have to weld on trailing arm mounts and a panhard bar mount. Getting the pinion angle correct is the biggest challenge. That differential will be 1.5" wider than your original differential, which is also a truck 12 bolt. The '77 Blazer tank may be a bit big for a shortbed truck. You may have to move the rear crossmember to be able to use it. The typical Blazer tank used on these trucks is the '69-'72 Blazer tank.