[super vw]

well... if everything is STOCK (cam,rockers...ect) than i dont see why you need anything other than a stock aluminum pushrod.

If you need a specific length (that you must measure with an "adustable" pushrod) you can go with a set of Manton Chromoly pushods... that are stronger and must be cut to length... but thay are heavy and do not expand at the same rate as the aluminum engine, so they get noisy as the engine heats up due to a larger valve gap.
OR what i would do is use a set of Aircooled.net HD aluminum pushrods, they are strong, lightweight and are quiet as they expand with the motor at the same rate...keeping the valve clearance the same. they are a little more expensive, but i think well worth it. this is what im using in my 1914cc T-1 motor.

And also you mentioned leaks? are you talking about the pushrod TUBES?

Jonathan