yes you do have to set the tappets
Yes, to access the tappets(lifters) you have to remove the cylinder head.
no unless you change the size of the rods
long ones are exhaust
The rocker arm.
Being an overhead cam engine, a Neon doesn't have push rods.
Double check the new push rods, they come in many lengths.
It's not really about what rockers you run. If you have guide plates, you need hardened push rods.
A 2002 Chrysler Sebring has an overhead cam engine. That means it does not have push rods.
what should you torque the rocker arms to when you reinstall the push-rods to on a 3.4 pontiac
Yes, it's possible. But the push rods usually take the worst of it.
To remove the push rods on a 1999 Grand Am 3.4L for an intake gasket replacement, first, ensure the engine is cool and disconnect the battery. Remove the intake manifold and valve covers to access the push rods. Carefully lift the push rods out, noting their order for reinstallation. To reinstall, place the push rods back in their original positions and reassemble the intake manifold and valve covers, ensuring all components are secured properly.
Any good parts store should be able to get the push rods for you and if they can't try Manciniracing.com.