Hello all, I have a 2001 Bullitt with only 80,000 miles on it, well taken care of. It now has a rattle noise in t he engine. One place says nothing is wrong, next place said timing chain, third place said may be but not sure, a wrist pin and replace the engine, 4th place couldn't figure it out and also said replace the engine. Replacing isnt an option due to collectible and I want numbers to match. Rebuild would be considered but that is very expensive to get done and not comfortable without anyone even knowing the problem spending that kind of money. The last person said it comes from the back of engine when he uses the stethoscope. Is anyone able to help with having the issue with theirs and know what it actually may be? I have a video but do not see a way to attach. .