Originally Posted by nicker2259
when my car gets to 40mph or more the car will start to shake uncontrollably when the rpms drop to 1500 can someone help me? Just replaced plugs and wires and fuel pressure regulater
Welcome to Bonneville Club!
Was the car doing this before you changed the plugs and wires, or only after?
Won't hurt to double check the routing of the ignition wires from the coils to the plugs.
Should look something like this (your engine doesn't have the supercharger, but your wire routing is the same as shown (thanks Haro, for the image)).