Rob
I bought my cap from LFS,he has a guy that makes them to to order.The retro kit is on cap lid,about 6 inches above tank.I will take a picture as soon as I get my camera back from my daughter{she took it to school}
Rob,
Don't know much about this light but I have a 46 bow also and wanted more light,I went with the CSL 4x96w pc retro.It's 35"x12.25"x2" and I was just able to fit and mount it on my cap,it's a big difference from the 2x96w that I had,got it from champion lighting.