Tried out the close ratio gears on the track at the weekend. Behind about an estimated 70 horses of banger they performed well - although at Prescott hill climb I did have to keep grabbing top (easy) and crashing back down into 2nd for the hairpins (easy enough but a crash...).
I do like the lack of synchro - it gives it a more vintage car feel. From what I gather, Mitchell don't recommend their synchro conversions for anything more than the standard horsepower?