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Software Serial and multiple shields for Arduino Uno

I have a SIM900 GPRS/GSM Shield (details here) and I am looking to stack a GPS shield (such as this one here). My question is: I believe that they both require software serial, also it says to use ...
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GSM and GPS shield pin conflict

I have an Arduino GSM shield and I plan to purchase an Adafruit GPS shield. The GPS module uses Pin 7 & 8 for Rx and Tx, but the GSM shield uses Pin 7 for Modem Reset. Will the overlap on pin 7 ...