If you are an enthusiastic and love to spend time with your bike then only you should go for SD-110 otherwise a big no.
Parts are not easily available. You must first check with Rafiq Autos (at the back of Dilpasand (Urdu Bazar)) before buying it.
Secondly, apparently engines of Sprinter and SD-110 looks similar but from inside they are lot different actually completely different, piston, head, gear system...etc so do not think that you can use sprinter engine parts in SD-110.
SD-110 head-light visor, rear jumps, back-light cover, mudguards, swing arm, chain cover, alloys are near to impossible to find out you may be lucky if you get used ones.