Review on Complete Ford 4.6L/5.4L/6.8L 3V Engines Repair Tools Set - Valve Spring Compressor, Crankshaft Positioning Tool, Cam Phaser Holding Tool, Timing Chain Locking Wedge with Crankshaft Pulley Bolt by David Guliford

, like all other reviews, the spring compressor is outdated. When flattened to the top of the feather, the head will appear too large to fit in most areas. Also, when assembling the tool, there is either an issue with the length of the bolt shank, or perhaps with the fact that the nut is not fully threaded. The nut does not engage the compressor threads. I had to work and now Revain doesn't have time to send me a nice over the counter tool. I just ordered a compressor locally for $170. save your money Haven't gotten around to it yet, but the holder and alignment tool seem fine.