Can I change the exhaust housing on my GT28rs?

[Grambos13]

I was wondering if a .64ar exhaust housing from a gt28r would fit my gt28rs that is currently sporting the .86ar exhuast housing. I'm pretty sure my old turbo was a gt28r but it could of been the s14 bb t28. I just want to get a little more low end since this car is going to be more of a track/auto x /drift setup. The reason I got it with the .86 was because I got such a good deal on it. Thanks in advance.