Sorry my mistake they are 140lbs springs, I checked on what I ordered and I remember Peter saying 180 would be too stiff. I would say from experience of many Marques of sports cars and doing track days and sprints the setup I have is about as good a compromise I can get on a +8. Having said that I have not driven a Suplex'd +8, so that would be interesting. Although I suspect I might not prefer it as I like a stiffer feel and don't find the feedback on rough roads too disturbing. I do think lowering the ride height also helps makes everything more stable, in conjunction with the other changes.
A Morgan is a tricky beast to tame!
On a side note, someone did tell me that for a short period in the 90's MMC fitted 120lbs springs to +8's due to supply shortage of 140's not sure if this is true or not. Anyway my 96 may have fitted into that build slot so I threw my springs away, I was going for shorter springs anyway because of the bearings.