What are your overall plans for the motor? Being that you haven't installed longtubes yet I'm guessing performance mods are at a minimum thus far. Really the stock ignition system is plenty strong.
While it might be a good upgrade to put in a MSD opti, unless your opti is already bad there is really no reason to replace it. I guess I could see getting the MSD and keeping the stock one if it still works just in case. IMO I would save that $400+ until you need it.
A lot of people like the OVTC wires with longtubes because it is easier to keep the wires from burning up on the header primaries. Also if you get thicker wires you might not even be able to put them in the stock wire mounting hardware from what I've read some people have said.
I'm not much of a spark plug know-it-all so I'll let someone else chime in on that one.
FWIW on my LE2 355 rebuild I'm spinning to 7k all the time and I have a fairly stock ignition system. My opti is a stock GM opti with a cheap ebay cap and rotor (just under 1500 miles on cap and rotor), stock coil and ICM with 145k miles on it, stock replacement wires from NAPA that I run in the stock routing locations with absolutely zero issues with my stainless longtubes, and NGK TR-55 plugs. Not a hiccup damn near all the way to the PCMs limits..
While it might be a good upgrade to put in a MSD opti, unless your opti is already bad there is really no reason to replace it. I guess I could see getting the MSD and keeping the stock one if it still works just in case. IMO I would save that $400+ until you need it.
A lot of people like the OVTC wires with longtubes because it is easier to keep the wires from burning up on the header primaries. Also if you get thicker wires you might not even be able to put them in the stock wire mounting hardware from what I've read some people have said.
I'm not much of a spark plug know-it-all so I'll let someone else chime in on that one.
FWIW on my LE2 355 rebuild I'm spinning to 7k all the time and I have a fairly stock ignition system. My opti is a stock GM opti with a cheap ebay cap and rotor (just under 1500 miles on cap and rotor), stock coil and ICM with 145k miles on it, stock replacement wires from NAPA that I run in the stock routing locations with absolutely zero issues with my stainless longtubes, and NGK TR-55 plugs. Not a hiccup damn near all the way to the PCMs limits..
