Been dreaming of building one like this one

Twin engine XS650 vintage drag bike I found in images on the web .
 I have a hookup on a spare engine ,  I just need to find another titled engine and chassis .   I would make mine streetable and have the single backbone / fuel tank. I would make the fit and finish to a show bike level and probably use a front brake.   I've loved the multi engined bikes since I was a kid and the XS is a nice fit.