I very much like the Stage 1 kit on my car, as it makes it run much better I believe, but I'd be hard pressed to tell if it's any faster. It may be, but that's not why I bought it in the first place.
Therein lies the problem. The stage 1 fixes some problems. Stage 2 really makes the morgan much more driveable and linear from a power delivery standpoint. The motor runs so much better in the sub 3k rpm range and feels like the above 3k. Once you do stage 2 the cost to stage 3 does not seem that high so you say hey why not. That is the dilemma. Though this is likely the case of stopping while you are ahead kind of thing.
I am just exploring as there is really limited info out there.
Ken
