Here are some picts of a 6BT that Ken toon when we were down taking a look at this engine.  It's been sitting there under a tarp with only 46,000 original miles on it, only problem is we went to check the oil and guess what? No oil :(

But anyways, I'm not sure if the picts to justice or not but it surprized me just how massive the 6bt is.  So I thought I'd post these picts so you could help get an idea. 

Click on pictures for full size images