1966 AMC Rambler Rouge, 4BBL 401 V8, 4 SPD manual, RWD
Not a change, but added just over a quart of Lubriguard 80W-90 to the transmission
This car had a fine running 290 V8. The owner, our customer and friend had to have a 401. So, now it has a 401 out of a '75 Jeep shoehorned under the hood.