Cometic gaskets are the bomb.
On the cheap headers the #3 pipe blocks decent access to the #5 and #7 plugs. Have fun pulling the plugs or trying when they are hot. Can't get a compression checker on those two either. The cheap headers hang under the steering on the driver side and unless you have the front end up in the air like an old time gasser, they are going to hit and drag. Save for TTI or Doug's.
This is what my cheapies looked like when they came off. Pretty sure there is a bit of a restriction there, Roadkill's testing be damned.
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