That's my bike.

Rear hub is a Campy Record road hub with a solid axle spaced to line up with the stock chainring at 120mm. The front is a no-name HF with standard 100mm spacing. Rims are 700c.

What you need to do is file the drop-outs to standard road-bike size openings. Then use frame alignment tools to cold-set the triangle and fork to standard 100/120.

The key is to do this with the proper tools so the drop-outs are aligned properly, plus this is heavy tubing and does not move that easily so you really need to do it right. The fork legs are very hard to get right.

The plus is, these bikes are horribly aligned from the factory. Once you've tweaked everything straight they actually ride terrific.

The stem is probably a 90-100 I can't remember off hand.