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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1969 280SE
2027 Ram 1500
2026 Genesis GV70
2007 Tiara 3200
1988 Egg Harbor 37
1981 Boston Whaler 17