"spamcan" is just a bit of jargon usually used to describe the range of typical metal American light aeroplanes found in flying clubs.
Incidentally..
To convert to group A you will need two hours of stall/spin awareness training and an hour of instrument flight appreciation. You can then take a navigation flight test and general flight test.
Some but very few people have done the conversation from M to SSEA in that few hours. 10ish is more normal.
G