MADMAX31

my 72 521 spits and sputters sometimes what is it ?

my 521 drums work great how much better do disk convertion really do for jus the front and leaving the back drums

I have2 521 mint i love them both and i have tons of parts i would let both go for 5000 but thats a lil out of your price range.... but they wil allways be here.

my 72 521 pickup spits an sputters out of the blue some times i changed the plugs it didnt do it as much ran 97 oct. did a lil better WHATS THE DEAL?