Alright Clois!! Now you're cookin with gas!!! You just bought yourself at least 50hp with a torque increase across the board.
A lot of people think the new aftermarket heads just increase power because they flow better. That is only half of the equation. They also have the latest technology fast burn heart shaped combustion chambers for much more power too. Year 2001 technology vs 1965 technology!!!
Did you give your buddie the cash to buy them on his card for you so the "boss" would not see the cost
???
Let us know what you think after you get them on.
Ed