anyone familiar with holley commander 950?

OMFG if you don't get that let me know. There's a number of ways to convert a manifold to multiport, or have it done. Keep in touch!!!

On the O2, and this applies ONLY to the Commander system, and NOT the newer HP system which I converted to, you can buy something like an innovate wideband O2 / display, and interface the Innovate output with the Commander ECU, IE you only need the one sensor. Commander was originally narrow band

Really, the ONLY downside to a Commander is that it's not "self learning" and I think Holley has pretty much abandoned it for any software updates. The one thing you DO want to do is to make sure the ECU is the newer firmware. I don't remember..........I think Holley charged me 125 or so US to flash the ECU. They make it sound like a "big deal" because they provide the new software. Well.......you can download THAT, so all you are "really getting" is the firmware flash

I've got a spare ECU (total of two) for my Commander stuff

Some of my EFI ramblings:

http://www.forabodiesonly.com/mopar/showthread.php?t=198603

http://www.forabodiesonly.com/mopar/showthread.php?t=209528

and the HP upgrade

http://www.forabodiesonly.com/mopar/showthread.php?p=1970081758