All Kents (711m block) are hard to find in the States thanks to the Formula Ford guys. The 1.3 and 1.6 are the same except the 1.3 is about 1" shorter in deck height. Conn rods are shorter. They are the same bore, same head (smaller valves). I know this because I probably have the only 1.3 Kent in the US in my Locost. The nice thing about Kent's is that they are a lot shorter in height that a DOHC motor. The only motor that I have found that compares to my 1.3 in height is the Suzuki Swift GTi 1.3 DOHC motor and it is getting just as rare. The Fiesta motor is a Kent but most were not drilled on one side for a motor mount. They can be drilled because a lot of FF drivers have done it. Also the crank on the Fiesta was not bored for the throw out bearing so that would have to be drilled also. ALL Kents are strong motors but not very high reving in stock form. They can get higher revs after doing some tweeking. The Brits refer to them as "Lumps" and that they are. If you have choices, use a Zetec, 4AGE, or other modern lighter engines. Kent's are old school but I love mine. Russ