.82 Garrett vs .85 Preision housings

[onefastgn]

I was looking for a .85 precision exhaust housing and I've found a garrett .82 that looks to be in good shape.What I really want to know is the precision housing going to be that much better on my combo below or will the garrett work out fine.I have a garrett .63 on there right now,and I was thinking this might help out on the top end.The price is around $70.00 for the garrett housing I thought that was a fair price shipped.Thanks for any help..