pulled out pump and put in a new one. Wont solve the problem cause the top housing is rotten. Any after market hamgers avalable

I have no clue what you're saying, but maybe this will help???
msd fuel pump

i pulled the pump out the top end of the gas tank.Then took the new pump and swappped iit into yhe old hanger assembly, this however will not solve the problem of the leak I have because it is on the outside of the pump, hanger where the intake , outake lines are. what is an msd fuel [pump

you need to replace that whole peice or fab some new lines.

You might could use some JB Cold weld epoxy on it...???

Mine was the same when I bought my truck last month. In fact that's why the guy sold it to me.
At $300 for a complete new assembly I decided to repair mine myself.
After removing it from the tank I removed the pump and fuel sending unit from the assembly.
I sand blasted the assembly to remove the rust.
I cut off the old rusted tubes flush with the top.
I took it to the auto parts and found tubing that was the same diameter as the old tubes.
I cut the new tubes just slightly longer than the rusted tubes that I cut off.
I used my pedistal grinder to grind down the diameter of the tubes and my Dremel with a small grinding wheel to make the holes in the assembly bigger. The idea here was to take equal amounts off the tubes and out of the holes for a length of 1/2" so that they would fit snuggly into each other.
After getting a good fit on the tubes to the holes I used a tubing bender to bend a 90 degree on both tubes like the old ones.
Since my top plate also had a hole in it I cut a peice of sheetmetal slightly larger than the hole.
I installed the tubes and aimed them to the correct side of the assembly and laid the hole patch in place. I then brazed the tubes and the patch to the plate. When I was done I sand blasted everything again. I used a bucket of water and some rubber tubing with clamps to pressure test my repaired assembly for leaks using air from my compressor. I took the time to put a good coat of paint on the assembly before putting it back together to prevent future corrosion.

very good post...