Ok here is my issue/question. I was about to change out valve stem seals on my 318. I took the first valve spring off on number 1 cylinder....i believe that was the exhaust valve spring. The seal just broke into 3 pieces. However i was able to see a part number... it was p/n 2205958. From what i found this seal was for a 6 cylinder and it was an intake seal not an exhaust. I had a gasket kit from Victor Reinz i bought years ago and the seals were positive style for intake and an a short umbrella style for the exhaust. Same valve size but seem to be a shorter umbrella type than came off. So i was wondering if i had the wrong seals. Are these positive type seals the way to go?