will a garrett gt1749vb fit a fabia vrs asz engine code. also where would be the best place be to send it to be hybridised and what sort of gains could i expect and how far could it be taken

Why is this in the freedom section? Surely fabia 1 would be better - will move it in a bit

Yes, it will bolt up to the head but you might need to change some pipework connections such as turbo intake and boost outlet. downpipe should bolt up the same and oil feed & drain too. It also might need clocking so the outlet points the right way (straight down) as some PD150s as stock point up.