MN6 cars run the big end better than us auto guys, but if the auto has a convertor and traction it is king of the LS1 group. LS1s respond so well to mods since the heads flow SOOOO well stock and can get over 300 cfm with porting work. 102-106 mph is average for boltons in a 4 speed and 106-109 mph for 6 speed.

a few of us run better than that