Saddle Tanks for 73-81 fit a 1970?

[bthodges]

Hi, brand new so if this posting is in the wrong place let me know.

I have a 1970 Chevy C20 Longhorn. I would like to remove the in cab gas tank and put saddle tanks under the bed. Does anyone know if the standard saddle tanks from 73-81 will work on the 1970? These are easy to obtain as opposed to the hard to find auxiliary tanks that were an option for the 1970.

Will they work? Will it take much modification? Any advice will help.

Thanks,