There is no Spyder III.
Yes, they accept all spyder threaded barrels.
No. The Spyder Imagine was not really designed to be upgraded, but you can buy an SO ASA mounted stock.
yes. I have it on mine. Very easy to install
It's a spyder clone. So youtube up some how-tos on spyder maintenance
Sadly no. The Spyder triggers will only work on spyder guns. Though, it is sorta a waste because the rocker trigger is illegal at most fields. This is because of the double microswitches.
It should come with one on it, but any adapter will work, they all have the same threading.
No, all (modern) hoppers have a standard feed neck size and will fit onto any gun (except for cyclone feeds).
Apex tips need an adaptor in order to work on a non-apex barrel. if you are just trying to buy the tip then no it will not work. if you are buying the apex barrel with the tip already on it, as long as you get it in spyder threads it will work just fine
Spyder means convertible. Lots of Italian car manufacturers have a spyder model
Spyder Turner was born in 1947.
Yes, most Spyder parts are universal on their markers.
Check/replace turn signal flasher