I can't wait to see if these start cracking. The MSP units have survived a number of brutal track days glowing red and hitting bumps and curbs over and over. Both OEM cast manifolds on my TITAN both leak from cracks and that's OEM and it has seen nothing close to the punishment the Z gets. I'd say it would be a miracle if the AMS/EBAY units didn't crack.
Last dyno w/sport 600's 512 whp 470 lbs-tq On 93 octane @ 17psi