Hi guys,
Im new to this site so not sure if this has been asked before. I have inherited a mk4 fiesta with only 40k miles and I really enjoy driving it. But I’m looking to make it faster/ put new engine in it. From what Iv read the puma 1.7 is the best option? It has a 1.25 engine in it. It also has air conditioning and an immobiliser, would it be way more hassle than it’s worth doing? Thanks