Hey guys any help given would be greatly appreciated. I have heard a few rumors and want to check the relivancey of them. This is my first car like this I got a kid on the way and wanted something nice and somewhat quick.

1.)I heard it is possible to swap 03 4.6 cobra heads on to my 3.9?????

2.) Can I use coil packs from a 4.6 mustang like after market msd packs and dis4 box

3.) Also does anyone know what plug wires would be compatible for my ls since they dont offer msd performance wires.




Thats all for now if you have any other ideas as to what I can do for some extra giddy up please msg me.

1. The 3.9L engine has nothing compatible with anything 4.6 modular.

2. Yes you can but they are coil on plugs and they will be exposed as the covers wont fit. also they have to be installed reversed.

3. The LS does not use plug wires...it has coil on plugs.

Please do some research on here....the LS engine is a jaguar AJ-V8 variant and not much can be done for performance. Most of us have intake, exhaust, and tune.

...and not much can be done for performance. Most of us have intake, exhaust, and tune.


And then there are those of us who are engaged in a full-on modification regimen designed to produce four-digit power.

A look through some of the longer-running threads on the forum will provide information. Questions are always welcome.

KS