This one?
2003 Donzi 38 ZRC, Buford Georgia - boats.com

If so, it's the former JBS Racing boat, built for Factory 2 back in the day. It's an earlier model, and has the two step bottom.
There are some "inventory" ZRC threads in the past with this boat mentioned. Tom A. knows at least some background on every one of them!

https://www.offshoreonly.com/forums/...m-dsc_0041.jpg

Couple quick clips here:

I am pretty sure there are two different ZRCs that JBS campaigned, the open cockpit (this one, for sale) and the canopy one. The canopy one is the one with the rougher life of the two.

Please see posts 31, 38, and 39 in this thread. That is what is what I know of the boat.

As Sydwayz said, I know a little bit about all the ZrComps (just enough to be dangerous lol). When I find something I like, I try to learn as much as possible.

https://cimg9.ibsrv.net/gimg/www.off...f3a4b7a97d.jpg

2015 Miami to Key West
https://cimg1.ibsrv.net/gimg/www.off...adc5c74193.jpg
Here is a ZRC that friends of ours own.

The old P1 race boat. Does the Brit that used to race it still own it?

Yes he does, it's in Miami now. Boat is staggered now he said it was side by side when he built the boat from a new bare hull.

That's a great boat and an awesome guy who owns it. I got to hang out with them a few years ago in Key West when they were racing it still. That boat started out life as one of only a couple 2003/2004 models that were side by side intended to go F-2 racing. That boat also came was one of the "Heritage" paint scheme boats of 2003. Donzi made a set of 5 white with red interior boats in tribute to their racing colors. Each one was slightly different. Two had red bottoms (one with a deck stripe, the other was the 26 boat), the others were all white (mine with just the boot stripe, the other two waere red accents around the canopies and rear hatch).