I found a 66 Thunderbird for sale locally that has the Q code 428. I thought if I could get it cheap enough I would keep the motor for my Fairlane but wondered if it was really even worth it. I am not looking to build a monster motor but I know that the 428 produces a ton of torque. The car is complete and has some rust but is currently not running. They are asking $1000 but it has been for sale for some time and I think they would come down a little.