random dc2r parts come up for sale all the time, u will have to get in quick and have a bit of $$$ to get a entire dc2r front.
imo- source the b18c2 front, do the conversion and slowly along the way add the extra dc2r parts that u want. most of the dc2r parts that u would want (that make any difference ie:KW) for the b18c2 are parts u can get aftermarket anyway.