i got a set of red steel nuts from ebay, looked great but the red coating on the inside of the internal drive but cracked and the nuts corroded/rusted - this was not an obvious problem until i tried to fit the spline drive key in. Yup you got it, damn thing wouldn't fit easily and had to chap it in then wiggle it around, just glad it was on my drive during the day in good weather and not in the dark in the pissing rain with a flat tyre needing changed or i'd have probably done a Basil Faulty and kicked the sh*t outa the car!
Wish i'd kept the tuner nuts i'd got from Driftworks - just plain chromed steel but so much better quality