eclipse system 3 lighting help needed asap

I have a buddy who is moving and is offering his system to me. It is about
40 gal, 30"x12.5"X25" and has the stock 2X18w lighting (Eclipse system 3 I
think they call it.).
He has some live rock and sand and a fwe small damsels in it.
I'd very much like to get back into the hobby and I know that amount of
light is real low. I want to grow some soft corals (shrooms, colt, xenia)
etc in there, real basic.

I googled a retro of that system and did not find much but a link to
customsealife.com (who has ceased operations apparantly) Does anyone know
of a PC retro that will work in the system and boost the lights, say maybe
2X55?

Any thoughts/ideas would be helpful.

He wants 150 for the system and I'm willing to put in a few more bucks to
start, but I have to tell him by this weekend.

Thanks in advance!!!