A 30r is SMALLER turbo. In twin scroll form it made ~26psi @ 3600rpm’s on my evo. My red (which is also twin scroll) makes 30psi @ 4100ish RPM’s. The red will make more power but spool slower.
I wouldn’t exactly call a red a stock turbo, compressor wheel that flows roughly 60lbs min. and basically a gt35r turbine wheel…