2001 XJ - Plug and coil pack for 4.5l

[Wraith40k]

Hello! My 2001 xj's engine was fully rebuilt and bored out to 4.5l and I am looking to upgrade the plugs/coil pack etc.

Having read through the forums - Do I go with an upgraded coil and NGK plugs then just play with the gap of .35-.4 ish?

 

[Ralph77]

Do the coil mod if you are going to swap out the coil.
They do make HP coils that you can run, never really understood the reason for one, but with a 4.5 maybe?
Go look at the Ksuspension website.
I just bought the harness and bracket from them.
A new Mopar coil for a JK, want to say '07 to '11, and any wires for a 4.0 will work.
Went with some Taylor 8mm wires for my '00.
Not that I needed my spark plug wires to be 8mm but.....