Part# PR-963-16 - Crow Cams super duty 0.080 wall thickness hardened heat treated high carbon steel, 1 piece push rods to suit a Ford 289 Windsor Engine. Standard length at 6.800 inch. Hardened - will suit early 289 heads with guide cast in the head and heads with pushrod guide plates installed.
The earlier 289 and 302 heads that had adjustable cast rocker arms [fulcrum type] used 6.825" length rods. Where as the later positve stop cast rocker arms used the longer 6.905" length pushrods. If you have an imported Windsor from the USA it may have pressed steel rocker arms similar to our Cleveland engines, it used 6.883" length push rods. And if your engine is machined then you will just have to check your rocker arm geomerty to ensure you have the correct length rods, there really is no other way if you want to ensure it is right.
The USA built Boss 302 ran a 7.595" for 1969 and ran a 7.660" length pusrod for 1970. The Boss 302 was in essense a Windsor block with Cleveland heads. Hence the odd length.
IMPORTANT NOTE: Please ensure you select the right length push rod for your engine. You can usually find the dimension in your engines' workshop manual specifications. Failing that you can measure them. KustomBitz will change over pushrods if you order the wrong length however it will cost you a 35% restocking fee plus the additional cost in shipping.