So I finally got some new parts in the mail.
AEM UEGO wideband controller/display gauge.
MSD 6AL-2 ignition box. It's a new digital box with 2-step rev control and a whole bunch of other stuff.
Blaster 2 coil
MSD dust cover for HEI with remote mount coil. Cap/rotor is Accel.
Sunpro tach. Matches the gauges in the dash.
Also finally pulled the trigger on the traction bars. I hate to change the suspension because it hooks so well as-is but it wheel hops bad if it breaks traction. If anything I'll have some good burnout videos soon!
Hopefully all this stuff will take care of the last of the weak links and I'll be able to get it tuned in with the wideband.