Thanks for all the advice. I guess since a new clutch is going in as well it will be a gentle break in. The T-5 is a fresh rebuild also and the 3.73's are new too. So after I introduce enough load to seat the rings, the consensus is to change the oil right away and then later around 500. The original engine was broken in hard right after I left the dealer. I changed the oil right at 500 miles and it lasted and ran strong up until 197,240 miles. I can't wait to dyno it and get some runs in at the track next year.