i was just wondering how many rpm's and boosted gsr guys are taking their engines to..if you are using the B18c block...

 

near redline

 

being...8000+ reason im asking is because...i have a B20 block im thinking of swapping into my gsr...but i was curious to know how much more rpm.s the Gsr would rev compared to the B20...either would be built whichever one i put in...