Now I feel weird...what inspection plate do you mean? Do you mean the little dog tag thing that has the numbers on it? That can't be what you mean. If it is, no, you don't have to have that, but that's a no-brainer (no offense).
What type of tranny is this? This would have probably been a good question to ask in Tech, but I think we can take care of you in Talk (just maybe not as quickly).