I just inherited a 1968 mustang fastback 289cool but not cool the body is rust free .it was bought in california about 20 years ago.and stored inside ever since. i took it for a ride.and found oil dripping off the plate on the front of transmission,the car is on stands. and the main seal is out.after reading about three how to books and three days.I have never turned a wrench in my life.but am a do it yourselfer do to lake of funds, the new top seal is in oil. i trimed the tab off the seal and am going to try to put it in tommarro.any tips.besides take it to a machanic.i pulled the piugs and they had a wet oil coat on them. is thare anything else i should do while i have the bottem apart.