[Bill Wells]

several later series SPF's have had 4.6L mod motors installed,some with blowers .

On later cars, the engine bay was reconfigured including the steering linkage so that the 4.6L would fit. I do not know what chassis number began the new engine bay layout.

I have not heard about any 5.4L installs, I was told this engine was too wide to stuff in the later reconfigured SPFs. Bill