I hope you know what you are doing with the APR stage 3 Steve.
I had the kit ready for my ED30 and then sold it to Gillm after deciding I liked the K04 better as I'd driven a couple of GT2871 cars and thought they were slower and a bit dimwitted at the bottom end.
If I was still in the ED30 I'd have a K04 hybrid in it now over the GT2871.