The Stovebolt Site Forums The Shop Area Engine Shop WHAT IS THIS THING 261, 235, 216?

Aaaaah! Ok, I have been told this Thing is a 216, 235, and a 261. "I" dont know. Here is a link to the eng. pic
http://groups.msn.com/acmountainviewranch/thingsphotoalbum.msnw?action=ShowPhoto&PhotoID=322
Now, Thing is a 1953 3800 1 ton. He has a 3 speed and I am "told" he has a 488 rear. I dont know if any of these are original. I assume so, but what do I know? Things odometer reads over 94K, and it does roll still. I am keeping the engine as it is still strong, but I need a new gasket as he has a leak. I would like to change out rear and tranny, any suggestions on that? (to make a better driver)
Ok guys! have fun, let me know what Thing is!