We decided that with nearly 200,000 miles on the big-block plus years of rainwater in the cylinders that a rebuild or replacement was in order. We chose a GM Goodwrench long-block engine for a handful of reasons. First is the ease of installation. This 454 (7.4L) engine is identical to what came out of the truck so the accessory mounts, intake and exhaust manifolds, and transmission flywheel will all bolt right up. Plus, this is a brand-new engine block and internals. Next was the time frame. We really didn't want to go through the process of getting either the old engine torn down and inspected (it later turned out to be beyond repair) or a salvage-yard block gone through and built; we just wanted to put an engine in the truck and get it dirty.