You must use 45 degree wires on some headers. We have a set of headers we use to run engines on run stands if the motor is getting manifolds. The first video has those headers you probably have. Notice the wires are 45's and 5 & 7 run under the tube. We keep these wires for our run stand. They are taylor wires
The second video is a different style which you can use straight ends.
You need to get the correct wires made for your headers.
