Motion Raceworks all new V2 Flex Line steam kit is the solution to your LS1 coolant crossover/steam kit issues facing stock and aftermarket low profile plastic intake manifolds. Many aftermarket intakes and some stock intakes do not have clearance under the intake to run a proper steam kit coolant crossover setup.  We have proven this kit for the Fast 92, LS6, LS1, LS2, LS3.  We will NOT return this kit if you order for another intake and it does not fit.  There are too many variations.  This kit is 100% made in the USA and designed by Motion Raceworks.  Parts are machined from 6061 aircraft aluminium. Also utilizes top quality Fragola lines.  This kit allows you to have a high flow 4 CORNER coolant crossover with a common manifold.  This kit will work with stock LS1, LS2, LS3, LS6, LS intakes and other variations of LS engines.  Do not risk premature engine failure due to blocking off rear coolant crossover/steam ports.  These kits are recommended by nearly all aftermarket engine builders! (Fast 92 intake pictured).