Phil - wil dig out some pics later - or you can pop over to take some yourself:P
Probably the main difference is that Snotty has an R6 seat pod & pad with aftermarket rear sets, whereas Tango has a std monster seat - and DP rearsets.
Pistons? - Snotty's 583 ones have done about 20,000 - looking like they have down more tho, so got some replacement ones out of cash got for DD bits sold.
Come & see them tonight if you like, as still boxed until AK makes a start on putting them in after dinner