the base is a given.... of course its a completely different 'bulb'. how do bulbs mount? via the base!
My 9145 HID bulbs are right angles just like the factory 9145's...the around base in the OP's pics look odd to me. And I dont think I see any 'teeth' on the OP's HID bulbs... But he got it to work...soooo.....over. lol.