Which land flashes fit in my strobe housing?

I found this the other day and thought I might give it a run again.

I used to use it long ago with the D100 with an SB28DX flash inside. I've no idea where that flash is now. My current flash is an SB900 and that does not fit. Eleonora's SB600 does fit - but I am not sure she'd want me taking it underwater.

So I am open for suggestions for other strobes to try. Don't have to be Nikon, but need to do Nikon i-TTL and fit.

Alex

Forums aren't working properly for me at the moment. Will post the missing picture (above) when they come back up to speed!

Dimensions of the inside of the housing will probably be more useful than a photo. There are quite a few strobes that can speak iTTL I think.

Bill