Start it up have someone help & put it under a load at nite hood up in the dark see if you see something arcing. NEW parts can be bad rite off the shelf.
Good luck sound like plug wires ?
They are not as Expensive these days well worth the money not to have to climb around in the dirt.
Mine came from best buy equipment just make sure you get one that.s Certified.
I Installed cat back Flow masters today now it sounds better LOL.
I bought a 4 post lift for my home sure makes it nicer not being in the dirt trying to work.