93 SSEi camshaft sensor

I hav to replace the camshaft sensor on my 93. I understand it is on the backside of the engine, just under the heads. Anyone have any tips on replacing this? Due to its location, I expect it to be a pain to get to. Any advice is greatly appreciated!

I found where the cam shaft sensor is located. It is located on the passenger side of the engine, behind a belt pully, close to the water pump. You need to remove the pulley and belt to access the sensor. It was a bit of a hassle just to replace a sensor. But hey, I got that great GM feeling!