The 4.3l V6 from gmc was making 280hp & 360 ft/lbs of torque (rated, actual ouput closer to 300 hp/400 ft/lbs tq) in 91 in the GMC Syclone. It was turbo though. Sad to say, but GM was on top of the turbo/import game with the GN, T-type, TTA, Sy/Ty, & Turbo Sunbird, but let them all drop off...