The cylinders are shorter than stock, so shorter pushrods, and shorter manifold will be needed to complete the engine. Crankcases must be bored to accept the larger 3-5/8 cylinders Stock flywheel assembly should be rebalanced Shorter Pushrods and Manifold are required EFI systems must be recalibrated.
The item "S&S 88 CYLINDER & PISTON KIT 3-5/8 BORE HARLEY 84-99 EVO STOCK HEADS 91-7502" is in sale since Friday, December 9, 2016. This item is in the category "eBay Motors\Parts & Accessories\Motorcycle Parts\Engines & Engine Parts\Big Bore & Top End Kits".
The seller is "shopthefox" and is located in Milwaukee, Wisconsin. This item can be shipped worldwide.