78 vette pace car

just acquired a 78 pace car with 14,000 org miles. The was stored for 25 yrs with only little driving. The car runs rough when warm, accelerating off a light. It is a L48 350, what can i do to make it run smoother? New to the vette world don't know any tricks yet.

carb or FI? would be good to get all old gas out, put premium in, new filters and all. if carb, then could need a good rebuild. How does it run once moving...still rough?

it runs good when i give it 1/2 or 3/4 pedal just when i take off from light it boughs down. it does have a carb, it ran good when i first drove it now, putting about 40 miles on it, it runs like this. I put 94 oct in it, i also bought an oct booster 104, have not added to it yet, wasnt sure.