its the common size,ordinary size, dont worry,almost compatible with all kits
one suggestion to you, if u wanna try this, then dont throw old one, sell your used switch to classic cng,jilani cng( in this way u will get atleast something) then add some money to it & buy that new one.
for more details :
CARBORN BODY SHOP:
Plot # A-408 sector 6A, Mehran Town, Korangi Industrial Area, Karachi.
Contact # 021 – 37093492, 0346-3512048