No worries, i got my inlet collar from a mate but there really expensive if you buy them new from jabba.
I can sell you one as i have 2. Will pm you details.
I have a full blend purely for extra boost which will increase bhp as the porting of the inlet, outlet and internal parts allows more air to be sucked in and forced out throughout the air flow system but im not sure how much of a difference it would make on a standard pulley size of 75mm, but i have a PSD toothed kit to go on at the same time, and that pulley size is 65mm and will increase boost pressure.
Now i cant remember this but a 65mm pulley will spin alot quicker hence it being smaller but there is a figure for how fast then spins depending what the engine revs are. Will try find it.
The heatshield shoul be easy to get hold of. I think there £20 from jabba, give them a call and ask to speak to brian and ask him.