K-Member question

6T9 V-100 said
'67 slant six cars use a one-year old bayonet style idler arm. Very expensive for what it isn't (POS); I believe the V-8 one is the same '67-'72. It is a bolt-through style. Check part numbers just to make sure

Nope. ALL 67 a-bodies used the SAME single stud mounting on the idler arm, even the 383 cars.