What year is the 390?
Early FE engines up to 64 had 2 bolt mounts.
65 and later have 4 bolt but only use 3 of the holes.
If it’s a 65 up 390 it will bolt in.
Early FE engines up to 64 had 2 bolt mounts.
65 and later have 4 bolt but only use 3 of the holes.
If it’s a 65 up 390 it will bolt in.