[Alpine TSi]

So I stripped most of the heads of the screws hold the FIAV onto my throttle body. I have a donor TB but the FIAV is screwed up too. Normally I would just drill the heads off of the screws but how would you get the screws out of the TB and then find the right ones to put back in? I wish it was as simple as having an 8mm on the outside like the rest of the screws... Help...

Thanks in advance.