I'm in the same boat as you when it comes to DSD. I know that installing one of the boards into the Bifrost requires lining up the leds with holes, I think it's the USB board so you might be lucky. The Bifrost thread has the install instructions about lining up stuff. Finding it may be a challenge.
I got advice to wait a bit on the dsd thingie until its matured a bit.....its nowhere sure it will be the next big thing..and its a pity to spend good money on something that wont last like so many good ideas in the past (sacd, sony beta, philips v2000 to name a few in the past..most superior over the systems that survived)
But if u want..go for it