Wake up a 1968 318...

I am not really looking for any major performance upgrades,
Does anyone here have experience with this? Again, mostly looking for reliability and mileage rather than ton of power.
SOME more power obviously, but nothing crazy by any means.

Well I guess, things have changed a mite.
But
Biggest bang for the buck is still gonna be a higher-stall Convertor. I suggest a minimum of 2800.