like a lot of people said that the engine on the FR is the same as on the Cupra, the single difference being the turbo, so you will find on the 140-170 engine...
I think there are differences, look at the FR vs Cupra engine:
- new ECU
- larger turbo-charger
- reinforced pistons and engine block
- strengthened connecting rods
- new ultra-heat-resistant alloy for the cylinder head
- larger fuel injectors
(after this comes bigger brakes, bigger disks, lower and harder suspension ++)
And yes, all this for 40 more BHP...