Search:

You must see all the shitters.
There are some shit ones but they usually have a price tag of under $600

Fitted 15+ after market heads yet to have one with the above faults
But may do one day,

The black block is called seal well

whats wrong with the after market stuff?
hard evidence or just a few duds? or backyard fit ups?

Yes, when you take the old one out look in the bottom pipe and you will see what I mean

Put the brakes on,

With the new rad, get a manual one if you look in bottom pipe on the auto the oil cooler blocks 3/4 of the pipe
Fit oil cooler on the front
That price you got is good

Now...

throw the rad away, you will be super lucky if head not rooted