The starters are re-build able, the 6.3 is the car to have IMO, lighter and I like the transmission better than the 6.9. The 6.3 is objectively prettier. The air suspension is a mess, but not as big of a mess as the hydraulic in my opinion.

The M100 Group is huge and full of good information. If you pick up a 6.3/6.9 get with the M100 Group. The M100 group can get air bags cheaper than Mercedes too.

I know someone who has a supercharged 6.9 running stand alone in a W116.

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68 280SL - 70 280SL - 70 300SEL 3.5 - 72 350SL - 72 280SEL 4.5 - 72 220 - 72 220D - 73 450SL - 84 230GE - 87 200TD - 90 190E 2.0 - 03 G500

Nissan GTR - Nissan Skyline GTS25T - Toyota GTFour - Rover Mini - Toyota Land Cruiser HJ60 - Cadillac Eldorado - BMW E30 - BMW 135i