ey everyone....i recently purchased some spark plugs NGK iridium BPR7EIX....and i noticed that it is a little bigger than the stock ones and i was going to install it but i wasnt sure if it was going to work....my question is...is this the right spark plugs and has anyone ever used it before....

When i went to go buy it they didnt have any of stcok 03 evo 8 NGK's in stock so the guy who i was talking to had a evo toos but then he said to order these because they are the upgraded version of the stock ones and it would be better for my car if im modifiying it up....and the guy who i talk to had a evo too so i thought to myself he probably knows what he is talking about but then again im not so sure since its a bit bigger than the stocks is it going to fit?....and has anyone installed this kind of spark plugs before?....please everyone help because this is kinda bull**** and i need help!!!!!