I recently installed the new 528 pump on my 74 Tii and I am happy with it. I did have to reroute the fuel lines near the pump to make sure none of them would rub on the half shafts.
I talked with two different people that work on cars for a living and asked If a new bosch or a rebuilt older model would be better. They both said it was no contest and to get the new one, so that's what I did.
I painted the littlle surge tank and bracket with POR 15 and coated the inside with POR 15 tank sealer . While I was there, I pulled the gas tank and did the same.
Instead off splicing wires, I built a new wiring harness for the pump and ran it all the way from the pump to the inside of the trunk.
I also found room just in front on the spare tire to mount the Tii Fuel filter, rather than up by the battery.
I was able to buy my new pump for about $130. I always like to have a spare and I won an auction for a new one for $50.
Hardest part was getting the hoses to fit right.
The new pump is much quieter. It also pumps up faster.
Starting is alot quicker but most of that is due to the M3 starter that I recently installed.
I am saving my old pump but I don't think I will go back.
Any body know the best way to preserve it?