THERE IS A -12an PORT ON THE FRONT WITH PLUG THAT CAN BE USED AS AN INSPECTION PORT. ONLY FITS THE NASCAR GM R07 ENGINE BLOCK, WILL NOT FIT A STANDARD SMALL BLOCK CHEVY. THE MAIN PAN SHELL IS STAINLESS, THE PAN RAILS AND ENDS FOR THE PAN SEALS ALONG WITH PICK UP TUBES ARE STEEL.
