That's basically what Karl always wanted me to do.

420bhp Is still good power, and will still see off most supercars.

I never did any full throttle high speed runs, so the fact that it was running a little lean on full boost will have been ok. I only ever really booted it in 3rd and 4th, and in those gears you were on the limiter in two seconds and you were doing 100mph before you knew it, ..................into 5th and it was only ever at half throttle, so it will be fine.

Did you ever get the handling sorted to your liking.....I would consider going back to the original hubs and bottom arms......, and I still have them in the garage.