You have a link for this report? Can't see why GM would need BMW's help. Their engine technology is doing just fine, especially in the V-8 department. None of those engines from BMW that you suggested seem any better than an LS3 from what I can tell from your information.
BRING BACK THE B4C POLICE CAMARO!
2002 V-6 5 speed rally red (current camaro) Also driven:1992 Z-28 305 auto Red w/ black stripes (anniversary), 2001 V-6 auto light pewter metallic,1991 RS V-6 auto Black