I happened to stumble on this today. Very interesting nicely documented project, web site, and youtube video's with a ton of informative content on the Type 918 V8, including the GT1 effort. The V8 he's installing has some of the GT1 mods.

Don't know the current status, seems like a long term project but hopefully it's moving forward.

Also has some insight to the stillborn Type 909 V8, which was the earlier approach that essentially integrated two 90x series I4's into a single engine. Curious, but maybe not surprising, how much the 909 prototype intake manifold resembled the intake on the Lotus-designed LT5 Corvette ZR1 engine.
Motor vehicle Musical instrument Wheel Automotive design Automotive tire