Although the ls1 is classic architecture, it has modern technology and is by no means old or out of date. It was Wards most advance motor of the year in 1998. Makes great horse power, a lot of torque, weighs less, is easier to work on, takes up less room, and gets 28-30mpg. If they wanted a DOHC motor they would have made one. I will stay with nice pushrod technology, Steve Saleen thought it was better to have a cam in block design and not overhead cams for his 400,000 dollar supercar. So don't be so fast to criticize a motor just because it isn't DOHC or OHC it really means nothing.