I removed my tank a few years ago,and didn't note the position of the rubber pieces at the rear mounts.Also at the front bolt,does the spring go above the tank lip,or below the crossmember,on the bolt? Thanks.
We just recently changed out our gas tank on our 47 Merc. convert.
There was one rubber pad centered on the tank on the front side of the car,
and 2 rubber pads towards the rear side. There was no spring anywhere to be found.
Hope this helps.