cross drilled front brakes

hi to all, Im new on this forum and the reason I signed up for it is cause I bought some NAPA cross drilled front rotors for my 98 civic which were supposed to be direct replacement to be used with my stock calipers and they ended up being about a inch bigger in diameter.:(The guy that sold them says they are the right ones but I cant seem to get the caliper on with out a extention. If anyone knows how to get them on right or of someone who makes an extention please let me know. thanks.