Hi. So I have a 99 2dr Tahoe 4X4 that is getting a new transmission. Summit sold me one that they swore was the correct one after I asked why the bell housing was different. I ended up going to a yard and pulling the correct dust shield cover. My old one just has a plate and a bell housing that goes all the way around. As I'm pulling my NP246 I notice it has 6 bolts holding it to the transmission, but the new transmission only has 4 bolt holes for attachment is there an adapter or do I just need to send this transmission back? Everything else as far as electronics, brackets, shields looks right. Looked at Advance Adapters page and it is difficult to pick the correct one, if there is one. Thanks in advance for any help. I've been lurking for months finding answers and info without posting any questions up until now. You all have been super helpful without even knowing it.