At least here in Sweden, the 240 is certified up 220 hp if memory serves my right. So any engine with less than that is possible, with a turbocharged B230 being the easiest and most popular choice for a swap. The car has to be from 1992 or earlier though, due to EU rules.

However you CAN do much crazier builds but that requires custom brakes, suspension, drivetrain etc in order to register it and make it road legal.

My guess is that most of Europe have similar rules.

I live in northern Scandinavia with similar temperatures in the winter.

Pretty much everyone here uses an electric block heater along with a cabin fan. I usually set it to turn on (using a timer) two hours before leaving when it’s cold and the drive gently (below 2000 rpm or so) until the engine is up to temp. The block heater makes a huge difference in the time it takes the engine to warm up.

Over 10 years of driving, this has worked fine for me.

Always the best tires in the rear. I can kind of see the arguments for putting the best ones in the front if a FWD car although I don’t agree, but on a RWD vehicle definitely the rear.