ProComp/Speedmaster aluminum heads

Not trying to pee in your cereal. I answered why I don't get excited about new parts. Cranks sized not only wrong, but not a Rod throw the same. Then you get to tell the customer why you are grinding his new crank.

Cams that don't match the cam card. See that a lot with OTS stuff.

Core shift.

Valves that look like they were ground with a right angle grinder, and the 45 is actually 42.

It goes on and on. It's just work.

I always know when I buy a custom part I'll usually be spending double to make it work or fit, LOL. Again always missing the point that this is my hobby not my work..
I always liked a challenging glued together model, not the ones that just clicked together....
Kind of like being a health nut. Gets to the point you can't even enjoy a meal, because you see all the toxics. Glad I just run the motors from the factory and I'm still pouring on the gravy!! LOL