SR20 T25 downpipe build
 

I bought this Vibrant 14490 downpipe flange and there was no information about the I.D on the holes. After receiving the package I measured the I.D and the bigger hole is 2 in and the smaller hole is 1.5 in. Should I return this and get the 2.25 and 1.5 I.D? Is this going to effect the performance? Also, how far does the wastegate open on the T25 turbo before it hits the downpipe flange?
https://cimg5.ibsrv.net/gimg/www.mia...2a8ff84b1.jpeg