I'm wondering if zmg is right.. when the second owner bought the car it was bone stock. I doubt the first owner would have swapped heads without any other
I am the third owner, 123,000 miles. Previous owner purchased it with 89,000 in 2010 and set it up for auto cross.
I will always recommend removing the intake off at a minimum. It's plastic and can get cracked if pinched by the cowl if you aren't careful. Getting
How many owners of the car besides you 2?
It's possible the heads were swapped out. Almost anything is better then the 806 heads.
How I removed mine I could have done it without removing the top end at all (except the FAST 102 that is) it was already off so it did make it easier