I'm just now putting the 331 in, although my I.D. is cobra331. I know why it costs so much to pay a shop and mechanics to do it!!! I've bruised and scraped the hell out of my hands, and broke two intake bolts trying to get it off!! But it's not too bad. Just alot of bending over the engine bay which really gets the lower back hurtin!! Anyways, I'm going to try and take pics and post em.