chassis is the same....
you may as well fit the wider front wishbones & hubs to get the bigger brakes too.
i think that is very needed. 1.4 brakes are cack and wont stop the car. also you will need to upgrade your current suspension as a 2.8 engine is a darn sight heavier than the 1.4!
they're not a whole lot better as 288mm brakes really... but better than 239's!
Be nice to see this actually happening and not just talk as it normally is
Willl you be able to use the stock exhaust manifold/downpipe - or will it hit anything?
You may want to think about suspension too as this engine will weigh loads more than the 1.4 - and a lot more than the 1.8t too i expect.
Rick
Its only circa 20kg heavier than the 20vT