What 7secondchevelle has up for your consideration is a new CAT forged steel 351W Ford 3.750 stroker crankshaft. Crank uses factory 351W mains and 2.100 large journal small block Chevy rod journals. Crank is a 4340 non twist forging. Catalog shows 6.200 rod so not sure if a 6.125" or 6,00" rod will fit without modifications. Crank can be used in both single and two piece rear main seal blocks. This crank is internally balanced so no external counter weights so they say. Crankshaft also has cross drilled mains. Used in 351W block at +.030 over will increase the displacement to 383cid. No that is not rust but left over cosmoline. Communication is the key. Please do your research on this item before bidding. Sold as is. Please read; shipping is to the lower 48 states only. NO P.O. Boxes or APOs. Must have a physical address. All others will need to contact me first for a shipping quote. I ship only to USA addresses. If you are out of the country I will ship to your exporter here in the US. I will not ship directly out of the USA. I will not be held responsible for non or under insured items. Local pickup is always OK. Please email me with any questions or for any additional information. Thank You and God Bless.