Snowman,

Can you afford $3.94 for an O2 bung?
http://cgi.ebay.com/ebaymotors/O2-Oxygen...=item35b405ddc1

http://cgi.ebay.com/ebaymotors/Stainless...=item5645b6aaa4
Stainless is $5.85 cents very pricey!!
Pics have been resized for a while now.

Put some smaller jets in your 390 so you dont waste /spend money on fuel, it will save in the long run, then you could buy a $3.94 cent total shipped O2 bung & get used to your wideband & get used to tuning. ;\)

MBHD

12 port SDS EFI