141k on the original Opti.

93 LT1 M6 all stock accept for a high flow cat.

I have use MSD parts for the last 15 years without any problems.

What would you do?

Kooks LT's with emissons fittings and catted Y come after the tune up.

All other parts are MSD wires, coil and NGK TR55IX plugs along with AC O2 sensors.

Thanks
Marc

 

Unfortunately due to forum issues Polls aren't really working right now. That being said I would replace the complete Opti, whether that be the MSD or the OE depends on how big your wallet is

 

How about a plug recomendation? AC delco OE the best?

I use the Iridiums in other vehicals and like them.

 

I use the AC Delco OE plugs. I usually don't recommend anything other than OE plugs unless you're planning on running nitrous and need a cooler plug.