[boxhead]

A little more on this now.
After driving for a few more KLs, and checking the car on hoist, I have found the front tyres rub (Just) on the tie rod end, When I bought the rims from Paul, they came with spacers, I elongated the holes on what where the rear ones to suit the larger Holden/Jag stud pattern and fitted (about 5mm spacers) I painted some white paint on inside of tyre where it had been contacting tie rod end, went and did some hard cornering and higher speed corners, rechecked and all good.
I also adjusted more neg camber into rear alignment, and now the rears also miss the rear fenders (was contacting just rearward of centre point on outer lip), I will get the alignment checked and toe in rear adjusted as it will now be toeing in more than it should.
I took it drag racing on Sunday, can report no real difference compared to the 17's on track times. with 1.78 60fts, 12.50 1/4 at 110mph these are near identical to times I ran with the 17's fitted.
Can also report no tramlining or "weird" feelings on the strip or at higher speeds.

The more I drive on them, the more I love them.