Pump and sending unit run sould work independently
So check to make sure you have proper fuel pressure at the shader valve under the hood during operation
Shuddering is also commonly caused by bad tranny fluid resulting in converter shutter
Beware I had to have modified brackets for the front of mine but many others have not. I also have a non fitting 1.375 front in the garage. I never tried to see if super coupe performance would take it back though.