GT2 pump is same as GT3 pump. Flows like hell at RPM. Requires a complete teardown to put in your motor though(have to split the cases). I’ve had numerous offers from 930 guys to buy it as it’s a highly sought after pump for the older 3.0-3.3 turbo’s and will fit with some minor case mods. If it ever came time to rebuild your motor, I’d do it right and only with a brand new GT3 pump.
GT2 rear control arms are different but require GT2 rear struts. Came off a customers car whom for I built tubular control arms with monoballs to lighten the car up in the rear(AL castings are HEAVY).
If you’re contemplating suspension mods, you should only be concerned with the JRZ’s. If you’re up to it, monoballs would be the next best thing but would sacrifice a little ride quality in the name of pure performance.