You have to get proto ones with the little toggle things on, then you just put the them in and your all good to go, dont have a clue, saw one up for sale a while ago for £3 so i dont think they are that much, i have a reaper strap but that wont fit
i Would be trading my axis for gba and all games and you cover my postage or it can be gba, ruby and 2/3 of the games that you havnt listed and you add/ cover my postage