Ok to gather up on all the "get another car" answers.
There is a reason as to why I don't do that.
1) the tax for that would be the price of the car + 180% of the street sale value at a dealer (average price) Yes that's how it works to import a car in Denmark and also the reason we drive ****ty cars. (so basically if I buy an italian car in italy at a price of 1000 pounds and wants to get plates for it in Denmark, I have to pay 1000 + 180% of that, which adds up to 2800 pounds. Now the we have to add transport, thats not cheap either. So it's way cheaper to find an engine and use that in the chassis I have which have the tax paid off.
2) insurance is insanely high if I want to change car again due to age and where I live (city area)
3) I have easy access to a garage with everything I can ever dream of. Lift, tools en masse, friends who can help and so forth. It's considered easyer to rebuild an engine and do a swap than to import a car. I have to work many times more to earn the money than to put another engine in it.
What I once read, but can't find, was that the chassis was modified to have the 100hp engine in (I guess other drive shafts, gearbox, suspension, brakes and so on) so I wanted to know if anyone knew was the exact difference between my dull 1.2 and the 100hp engine.
I have around 140 KM or driving every day so the fact that the 100hp goes 15km/liter is considered good. the 1.2 goes 17 so it's not a great loss for me to gain allmost 66% more power (in DK you can calculate 1000 DKR into 1 HP, thats about 100 pound pr. horsepower on non turbo/supercharged engines so this is extremely cheap power-ups)
so if I could get an engine (no tax on that) would be WAY cheaper for me.
Also, way easier to put into the car.
If I buy an engine, it's with the ECU and complete wire loom.
What I need to know is, does it fit right in?
Does the speedometer show correct or do I need to get one from the 100hp car?
Can the driveshafts handle the increse of power?
I guess that the gearbox is not the same too?
The 1.4 you talk about, is that the one from the punto 2003 -> 1,4 16v dynamic/sporting ? is that a direct fit? again, gearbox, driveshaft, speedometer and so forth.
I haven't seen an answer, and I belive it's not been done before. (prolly because in most other countrys the tax ain't as insanely high as in DK, so it's no use in other places)
But I have made my panda as I want it with everything I can think of of modifications to it, all I need now is more power and better seats. (ex. the ones from the 100hp)
oh yeah also, buying a donor car is a great idea and an easy way to get the parts I need, but it's not cheap due to transport. (there is no tax on a donor car as long as the VIN never gets plates on and it may never drive on the road in Denmark unless tax is paid. the fee for doing so is 2xtax and if you get a ticket for ex. speeding you have to pay that too, also your insurance dosen't cover a non-taxed car)
So basically, I need the differences on the car, nothing else.
Hope this put the problem in perspective as to why I need the parts and not another car
also, special tuning rules say that if I add a turbo to a non-turbo engine, I have to pay a whole new tax (same for superchargers) that means the original tax I paid is lost and can't be refunded, then I have to pay a new and higher tax for the modifications, also I need to go through tests that also cost a buttload, so going turbo is not an option unfortunately
UNLESS there is a model of the Fiat Panda 2003-2012 that came originalli fitted with a turbo and was not above 20% in power of my original 60hp engine (72hp) and I doubt that happened
Sorry for the long post though.