Yes you can.
I have a '68 Convert with a MagnaCharged LS2 and ALL of my stock gauges work. You will need a tach pulse multiplier/adapter to switch coil signal from 4 cyl to 8 cyl. Oil pressure line (mechanical) can be tapped into the 2-bolt piece near the oil filter, and you can get an adapter to run a TS6 sending unit in the metric thread port on the head to get water temp.
Good luck!