09 D8;I got the .375/47 ° what about shock?

It depends on your budget. If you want to stay on the reasonable priced end Walker Evans Clickers or Fox Zero Pro's are both a nice upgrade (both are available with many spring options). Next up the expense line would be Raptors. And then Exits if you really want to spend the money. I'm not a fan of so called air shocks, so I'll let someone else touch on those more. When you blow an air shock you left with a collapsed suspension and your day is done, with a sprung suspension your sled is still supported and you can ride.