1) Yes legal if you have an ADR aprroved one. I had one for 3 years and never had any problems(not ADR aproved tho)
2) Who ever sells them empire/SRB on this forum has them. They sould be straight fit take off your bonnet and fit it (i have a GTR)
3)see above
4) pic on a black 32 LOL
http://img179.imageshack.us/my.php?image=pict0067if5.jpg