Unless you have a machinist buddy be ready to spend for a modern front end. You can go a little cheaper if you use the matching wheel to the forks, but if you want spokes it'll cost even more. I made my own stem, modified a hub, and had it laced to a 17" wheel, still cost close to $1k. Breakdown, forks $200, stem $0, hub $20, bearings/seals $40, rim and lacing $550, rotor $35, caliper $40 etc.