Okay basically hp sir. FYI there is no more 300 N* in the Deville/new DTS. The motor makes 291hp and 286lbft. of tq. The 300 horse one you thinking of was stopped being put in the DTS in 2004!
They call the 291hp verison the NHP **I believe its the same as an L37**. You have an LD8 in yours my friend which I just posted an application list. Here'* the link scroll down and read my post that should clear the rest of it up. http://www.bonnevilleclub.com/forum/...ic.php?t=45123
Oh and you have the 275hp and 300lbft. of tq verison which is the LD8.
Need anything more just ask.