I have a fiesta mk4 1.25 16v zetec. I have been looking to fit 1.4 or 1.6 zetec from the same age 95-01 out of a fiesta or focus or escort. Are these engines the same dimensions but just boured deaper? and would i need a new fuel pump and air filter and would my loom just connect? I assume the gear box would work or one supplied with engine would fit. I have worked on cars before just this is the biggest project i have thought about so any advise would be champion and thanks you for your time.