Is there anything specific about the drifter that I need to watch for when getting a windshield? Or will the mount kit and windshields for a Classic work since it uses essentially the same front end setup?
No, the classic front end is a bit different... upper triple tree area. So, not all w/s kits for classics will work on the drifter.
I believe the National Cycle mounts will work, but the Memphis Shades won't. Also don't think the F&S will work without reworking brackets.
Best bet is to go to the accessories area for windshields and check out DRIFTER specific shields... Rifle, NC, etc. IMHO.
I put a Ntional Cycle shield on my 800 but you have to use some supplied rubber stuff under the mounts.
I also don't like the fact there is about 5" of space between the headlight and headlight cutout.
Yeah, too much space there will cause some wind buffeting problems.