Dongray,
I went with the plastic tank to eliminate any internal corrosion issues and with it being black it blends in with the chassis. I’d like to think it’s less noticeable when viewing the truck from the rear.
The sender/fuel pump assembly in my tank is for a fuel injected engine, which you do not want. If you are running an in-line 6 with a mechanical engine driven fuel pump, all you need is the fuel sending unit similar (not the correct sender for your application, just an example) to the first attachment below.
It will have a fuel pick up tube and some come with an evap tube that you can use as a vent for the tank. I ran fuel resistant hose to the RH rear stake pocket, attached a roll over vent and placed it above the fill tube level. The second attachment is the vent I used.
You’ll probably have an Ohm mismatch between your tank sender and fuel gauge. Classic Instruments sells a small device that’s easy to install and calibrate, that syncs the sender to the gauge for correct fuel level indication. See third attachment.
Can’t say this is the 100% correct way to do this but it’s how I did mine.
https://www.gastankdepot.com/such-05-1968-70-skylark-chevelle-el-camino-gto-cutlass.html. https://www.tanksinc.com/index.cfm/page/ptype=product/product_id=98/mode=prod/prd98.htm?msclkid=49295653598b183bc4933781b3788c06&utm_source=bing&utm_medium=cpc&utm_campaign=**LP%20Shop%20-%20Under%20%2420&utm_term=4588193303723311&utm_content=98%20%7C%20Remote%20Mount%20Rollover%20Vent%20Valve%20%7C%20%2415
https://www.speedwaymotors.com/Classic-Instruments-SN34-Fuel-Link-Interface,230181.html
