Gentles
Just for the record, whom known's my bussiness, im maritime law enforcemnt. therefore if a cargo manifest has something like engine parts (fire arms parts will be on 1000x magnifing glass) they will be scrutinyzed thourougly and sent to customs, as a 2nd filter (due to tax paying, or criminal court), but if they not fullfill EPA's regulations you will be enrouled on a maze to take your iron gems from burocracy, and you will end to pay a gold plate crank case or crank shaft, if it doesnt go to scrap, and scrap mouney go to gov.
just my 10cents! be aware!
BR
VP
PS: US Customs have a white list, and if you end up out of it, you are done!