Help . Installed auto transmission , loud clunking noises ????

So I pulled my Trans out , so I could install a cope full manual valve body and the billet servo . Instead of me doing it I Decided to drop it of at my Trans guy . Today I finished putting everything in , connecting all the lines etc... Everything got put back and bolted into place.

So this is the problem when I proceeded to start my car . Once started there is a Loud clunking noise , like something is hitting something . I can't really figure it out. Once I heard that noise I shut off my car . Checked everything and turned it on again . And same thing .

So now I'm lost, do you guys maybe know what could be wrong ????