Changing Track Width (on my car - not a circuit)

[Woofly]

Technical Vintage Question

I have found a new front axle for my car (1922 Fiat)that has front brakes (probably a good idea) I have to weld up and redrill the spring mounts so that the centres are 28mm closer together but that will still leave the new track width 6.3" wider than the old front axle and the rear axle. Any suggestions on how this is likely to affect handling? I could narrow the whole thing but that would need a cut and shut on each side outboard of the springs and I woud also have to shorten the perrot shafts and track rod!

All suggestions welcome - before I cut up the axle , I told you so after the event will go straight to room 101