[Guest]

does anyone know if a 400 which is slightly wider than a 351c (i think) will fit in a 67 fastback without removing the shocktowers with mustang II suspension¿

 

[Opentracker]

Ford put FE's in those cars. Plenty of room. I have a 351 Cleveland in a
'65 coup with no shock tower work.
"There is no replacement for displacement"