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Here is the 4-inch Lunati crank and a set of eight custom-made Wiseco pistons. Lunati 6.125-inch Pro Billet rods will be swinging the Wisecos in this application. MTI's crew doesn't recommend using stock rods in a performance application--they are good rods for factory parts, but Jayson and company has seen the powdered metal units bend and break in nitrous applications. MTI will still build a motor with them at the customer's request, but he or she will be driving away without the benefit of MTI's 2-year/24,000-mile warranty.