What do these engines last?? considering it's built right with good parts, a good tune, and justa a cruising foot with the occasional stop light drag race or freeway staight??? I will use my 331 stroker EVERY day, rain or shine, i dont beat on my cars but do get on them when i have to, i have been to the track twice in 4 years, always use synthetics and well you get the picture, do these engines have what it takes to last like a stocker??? or are they just doomed from the begining?? i only hear of people with 8-15k on their stroker's...why???