Depends on how far you want to take it. 2-5k is easily reached.
And just camming will be cheaper. Most likely 1k or so. But also alot lower gains as its a small engine and not a big V8.
Supercharging is also not that expensive. But 2-3k is easily reached if you cant weld yourself.
And im not sure but there might be some bolts that needed to be undone from the bottom.
Watch out for the throttle cable (So that it doesnt lose the adjustment)
Carefully remove the vacuum hoses from the back as it sometimes happens that you pull off the plugs.
And like Ihtisham said. Replace...
sometimes its still there. Just check it. Else you can buy something like this:
Underneath. the k10 spring is too short. You can get a set with different springs on ebay for a few quid. Those have one that fit. But if you still have the spring hanging on by 1 side you can just bent a new tab on it and refit it.
Im not sure if the k11 is different there but here in Europe and UK they dont have electronic power steering. Id start with checking suspension. Mine pulled to the right because of a very worn tyre (1mm vs 6mm on the other tyres) due to a worn out shock.
It can but if a pump cant supply the pressure you most likely also notice it when driving. So not likely. If i remember correctly i also dont hear the pump running when i turn the key on on my second facelift.
No you need to check it between pin 1 and 3. You should be able to turn the sensor a bit as the screw holes are slotted to adjust it. So just unscrew both screws a little bit and turn the sensor till you measure proper voltage.