hes not tapping the pan guys. read the post carefully, hes using an expanding insert to creat a good threaded hole without tapping or welding. BUT what hes trying to do while its a good idea it will leak. they arent liquid-tight Jay. Unless fasenal has something new i havent seen yet. just pull the pan and take it to a shop if your that worried. no offense but all this time wonder what to do you would have already had the pan off and back on by now!!!!
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1998 Firebird:buncha parts thats used to make it go fast..... not so much anymore. 
BAAAAAA!!!!!!
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