Our '08 "entry level" we bought last year has the 2 piece covers.
It is odd that they would have 2 different covers for the same engine. You would think they would use only a 2 pc. cover to help alleviate heat buildup around the intake manifold.
'08 G8 Panther Black V6. Purchased 30 Oct '08
'09 G8 GT Prem. & Sport Pkg. Purchased May '10
'04 GTO Cosmos Purple M6, '05 Hood and Brakes, SAP Grills and spoiler, Procharger, TrickFlow 515 hp H/C Kit, SLP LT's/LM II exhaust, drag bags, SCSS Gauge pod, CV8R Wheels, GMM Ripshifter.