Was wondering the same, want to put straight 1.5 forks on an alpine 160.

Have a look here,

http://blog.sidewayscycles.co.uk/2011/03/25/1-5-steerer-integrated-headset/

It will look odd, but it might work!

I have a CCDB, I tried and failed to set it up properly for my Slopestyle. Ended up emailing Cane Creek for suggested settings, dialed them in and the difference was amazing. Once set up, it’s a belter. Same as everyone else says.

The other one to think about is the Bos Stoy. Same price as the CCDB, but they tune it up ready for you and your bike, so no faffing with dials for weeks. By all accounts, it’s the only shock on a par with the double barell.