Hi Michael,
A good experienced welder could repair them and then you could have them re-chromed.
Finding a full set of Series II handle bars will be near on impossible as it would render the mower they came from as useless and most mowers will get repaired and sold as they are worth too much to simply throw out nowadays.
A heads up,
The Series 1 assembly is different to the Series 2 and as such with the engine you have fitted on it you will not be able to have a set of Series 1 bars attached and clear the petrol tank, thus why the difference.
Now in saying all that, it is only the top half you will require and as such any upper section will fit on to the lower half as it's only the lower portion that is different between S1 and S2 machines,
so,
You could look for an old electric 14 inch to part out which generally sells for next to nothing on Gumtree, don't pay any more than around $60 for one of those unless it has a really good catcher, as then it'll be around $120 with the catcher being most of the value in it.
Cheers,
BB.
