Oh no!
Dont sell the mango Stumpy. They do go for good money but as the others have said, if you already think you will miss it, then you probably will. I have an M2 singlespeeded and I have my modern Stumpy hardtail, I have the V brakes rather than discs and a fox fork and it is a familiar ride but a lot more up to date. Lighter, faster, plusher.
Rockhopper SL's are a great bike.
There was a shop selling a couple of modern Stumpy frames, NOS, about a year or so old. There was a couple of very small M5 and an 18 in M5 and carbon marathon. They were quite cheap from memory, just not my size. If your interested I will try to find wherever it is in my 'random favourite' file :roll:
Though nothing like getting it complete and ready to roll
In summary........dont sell the M2, you will regret it.
Jamie