flip top gas cap

[bigter33]

I'm changing my 70 challenger twist gas cap to a flip top, any one know if I need to change the filler tube or do any mods. Thanks for the input.
Ter.

 

[bad440]

Bolts on, no problem.

 

[moparleo]

The fliptop is only a cover on the filler neck. Need to get a standard or locking cap for a 1970 model. The caps are different for the 1970.