Take the motor mount off of the metal piece on the six and it bolts right up to the 8 and it will drop back in the same place as the six. the six mounts are a little stronger then the 8's the six has more torque then most small 8's, did my dads 72 from a six to a 8 and used the same mounts and never broke one. I have never broke one with the six that I run that makes over 200 foot pounds of torque and some were around 165 HP at the tires. most 66 came with the bigger rad. if it does have the small 17 1/2 you would need to change it out. is your a auto are a manual trans.
super250six
