tell the truth, its not like the outside of the truck shows obvious signs of abuse or anything, so i doubt people will assum that the engine had to be patched back together
retain all the receipts from the rebuild to show that the engine was done right, and if its still apart, take pics of the internals to show that everything is proper
this way, noone has to wonder if you just threw some bearings in a trashed motor so it would sound good for 1000 miles