Hello everyone. I would just like to say thanks for even looking at this post. This is my first post and I'm not even sure if it's going to the right place haha. But I would appreciate some feedback if you're reading this, thank you.   So I've been workin on this car for about 4 years now. I know the insides and outs of the motor since I've built it. But I'm running into this insane cooling issue.   This is a Datsun 280z 1978, late 77. Running a stock bottom block l28. With an N47 top end