Just check the legality in your state of converting gas car to diesel. It shouldn't be a problem since it would be a newer engine, but some states can be a real PITA. CT comes to mind

Other than that, it's just $$$.

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1980 300TD-China Blue/Blue MBTex-2nd Owner, 107K (Alt Blau) OBK #15
'06 Chevy Tahoe Z71 (for the wife & 4 kids, current mule) '03 Honda Odyssey (son #1's ride, reluctantly) '99 GMC Suburban (255K+ miles, semi-retired mule) 21' SeaRay Seville (summer escape pod)