hi everyone new to the forum and just and just had a few question and hoping someone can point me in the right direction. So i have 03 mustang v6 with 67,700 miles on it. i bought in when i was in high school and gave it to my father with i started having kids, well i recently got it back and it seemed like he hardly drove it reason for the great mileage. Anyway i noticed a leak while it was sitting for a day in the garage. come to find out i need an rear main seal leak, ok and that fine but the mechanic said I have a transmission leak also and need an extension housing gasket. when i call other mechanics and mention the gasket they seem confused and say do you just need it sealed up. so does anyone have info or pictures on the location of this extension housing and gasket. any help would be greatly appreciated.