3 Questions

[SVXalter]

So my rear main seal is leaking at a decent rate, and asking around I've been quoted in the $400-$500 dollar range. What is a good price, and is there any way of it not costing so much?? I know that's probably my only option but it's worth a shot.

Also, I am getting a basic transmission cooler. I think the B&M 70268 should do. Are there any detailed how-tos on the installation of such a model? I don't want to mess anything up when putting it in.

One more question. Does anyone know where oxygen sensor 3 is exactly? I threw a code for it the other day and would like to clean it up a bit.

Thank you all.