The Jag is a POS, it would be in the shop every other week. The M120 is a far better engine than that Jag 12 in every regard.

You are a brave person to consider a V12 Jag! There is a reason you can buy them for a song...

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2006 CL500
2009 C300 4matic
1969 280SE
2023 Ram 1500
2007 Tiara 3200