[QUOTE=" Has anyone converted one or another model cruzbike into a lowracer?[/QUOTE]
Yes.
I've converted my Sofrider V1:
My Sofrider has two self- built composite seats, one is reclined about 30 degrees and the other is almost 18 degrees reclined.
The seats work with a tall composite chainstay (which elevated the bottom bracket to the same plane as my hips), narrow drop bars and
a fully faired rear wheel.
With 26" wheels, my custom Sofrider is really a high racer, but that's pretty close to what you are asking, right?
With small wheels and huge chainrings, it could be a low racer, but it works very well. No need for small wheels to avoid heel-strike, because FWD eliminates wheel-strike.
How does it work?
My Sofrider, with the low seat and the rear shock deleted/replaced with a solid strut, is faster than my Vendetta on level roads.
However, my Vendetta is crazy-stiff and is much faster uphill than my Sofrider ever could be, so that's what I ride on the road, in the real world.
The Sofrider lives on the indoor trainer.