My tank still has a vent above the sending unit so I'm not sure if it is repop or not but looks original and has undercoating on it. It would also make a nice spot to run the return line to avoid vapor lock.
The non vented cars used the filler in this pic with the small metal line exitring the trunk floor at the seal. If yours doesn't have that or the nipple for it then you need a vented one.
Yes,you need to drop the tank. It's easiest if you take the 4 screws out that hold it to the 1/4 and the rubber pad that seal it to the floor and squirt some WD or PB Blaster at the seal and twist the filler neck out.
No,climb under the car on the passenger side and have someone bounce and shake the car side to side. It's down under the trunk floor. That seal is to seal the tube to the trunk floor.
More pics? Is it a 2 or 4dr? What state are you in? A fellow member (azmopar) has a 67 Valiant Signet 2dr commando car with a 4spd and it's a pilot car making it a 1 of 1.
They said you need a crank signal but didn't mention what they did to use one. I run an LA motor with a std 904 so no provisions for sensors on my combo.
I always run metal where I can and as little rubber as possible. I just use it at the connections and use EFI hose. My system is 3/8 but I run a modified 340.
Jim and Loretta Fillmore
Detroit Muscle Technologies
23624 Roseberry Ave
Warren, MI 48089
586-777-7167
586-777-7947 fax
jamesfillmore(at)DetroitMuscleTechnologies(dot)com