Sorry for not responding for quite some time but I've been really busy.
Right now I have 6 sets of the splitters for sale and I'm ready to take payments. I'm still working on the diffusors, the last one was sold 3 weeks ago.
2000 E39 525Tds (sold)
2003 E46 330Cd (almost retired)
1998 E36 316Ci (fiance's ride)
2015 F36 435dx (order pending)