I'm in the process of restoring a 69 mustang. It started life as a I6 and currently holds what is believed to be a 289. I'm thinking about picking up a running 429 for $400. my question is, would the 429 fit in what was once a I6 car or am I biting off too much? I dont see the car being drivable for a few years anyway so time is not an issue. I'm fairly mechanically inclined and have swapped engines before but not for a larger one. the 429 will come with a C6 trans as well. if anyone has any advice or pointers anything would be helpful and welcomed.