This is the data sheet for the epoxy i used on the lense:
http://tds.loctite.com/tds5/docs/HYSAE-120HP-EN.PDFCan't find data sheets for the stuff i used on the back, it was made by permatex, no longer made i believe. It was this awesome putty epoxy, used it on the headlamps and the clear tails i made. One of the listed substrates was ABS, but through testing i found that it had a good bond between ABS and magnesium (hella housing is made of magnesium).