ibiza 6 l

Hi guys just a quickie, does anybody if there are any differences between the diesel and petrol pad packs or do they go straight in, I.e a 1.4 petrol rad pack on a pd 100 diesel would it fit?

I have recently bought a seat ibiza about a week ago and just noticed that when I brake reasonably hard the front wheels move towards the rear of the car by about 5 or 6 inches I’ve had a browse through the forums and I cannot find anyone who’s had this problem can anybody tell me why it is...