The 800's
If you found a deal on an 07 M8 not a problem.
If you can buy an 08 or 09 for very little more money go for it.
The M8 has been in an evolution since it started as the M7, with little money and some shop time all these sled can perform better than the latest model.
07-09 engines are the same, the different programed brain box all different but engine will put out the same Hp give or take 1 hp.
The biggest change is the 08 09 rear suspension is better, still not that expensive to change if you get a good buy on a low miles sled.
1. check for oil and grease in clutch area.......indicates leaking DD drive, not a deal killer but a must fix.
2. check tunnel at seat/tank junction for any sign of warp or bending......someones been launching it.
3. look at weld joints on front suspension arms for signs of paint flaking excessively........meaning someone's been hitting stumps.
4. check belly pan just as it hits tunnel , it you try and glide over lots of rocks this is where it shows.
5. check track for lugs missisng..........no biggy becasue the first mod should be a Pclaw track
If you buy an 07, read all the clutching threads, or take to shop and have 09 clutching parts installed. Want it to run better yet ............all the imfo is here on on this forum.