Dumb things that you did.......because you didn't know any better.

no headers for a streeter.
My boss bought three different sets to make one set, for an E-body. And we built custom engine brackets. And what not. The thing is, I told him before we started there were no headers for that combo . And there was no good reason to put those Ultra heads on there. I knew the owner and he was a pussy. A 318 wouldda been enough for this car.
The owner said that 6-pac 340 made 497 .. on dyno headers. Yeah right. In any case the car is parked in an air-conditioned garage and I wonder if in 6 years it has a hundred miles on it yet.
I bet those headers cost the guy $2000Canadian...... plus powdercoat, sheesh.
I quit that job shortly after finishing that project. Between the two of those thick fellows, I had had enough.