You could restore it as a "looker" but it's value will be pretty severely impaired. Digging out correct hardware and a proper stock set would be fairly time consuming and also pricey.

An original, unmolested Rock Island sporting a serial number in the range of your rifle would be a rare beauty and very costly.

You might consider having a gunsmith fill the holes, gathering up a stock and hardware to recreate a rifle that looked as if it was a post World War I rebuild. That might be a more realistic goal.