I have a lightly used Lunati Signature LS 4.125" Crank. It appears to be a light weight profile. It has 8 slugs of heavy metal in it, and is balanced to 1772g. I also have the set of Lunati Signature I-beam 6.125" Rods (PN 60361250) used with the Crank. The Crank is a 2" pin, and the Rods match with a 2" applicable big end. The small end takes a 0.866" pin. The result is a ~635g heavy duty Rod. The crank was custom finished by Lunati for Warren Johnson. I purchased the package directly from Warren. My plans have changed. My loss is your gain. Asking $1800 plus shipping.