its on the back of the motor, it goes between the oil pan and the block. it looks like it holds the rear main seal. i know something goes there cause my oil pan has to exstra holes and there is a gapthat the oil pan exstendes out. any ideas?

 

You talking about the aluminum housing piece that holds the rear main seal?
Go here and see if you can see what you're talking about: http://www.corvettefever.com/howto/36501/index.html

 

right on dude thats exactly what im looking for thanks alot!