The DIY kit includes everything you need to create a water pump inlet. A block bushing that has a machined shoulder that stops against the block, 1-1/4" counter-bore to receive the 1-1/4" u-bend, and an o-ring groove to accept the OEM crossover tube o-ring. The u-bend is 1-1/4" on a 2.00" CLR. The billet triangle has a 1.290" bore, allowing for some misalignment, as well as slotted mounting holes which give additional flexibility with misalignment as well as accommodate for engines that may have had cylinder head or block work done that affect the deck height.