Yes, there is difference between the RS/LS/GS pump and the GSR pump because they have a different part #.
I was bored and curious, but I guess Ill just end up getting the 255 lph walbro.
The reason I created the thread is that walbro has a 190lph option and I was curious how it compared with my OEM unit.
How come you’re changing the fuel pump , just curious?
it brokes
went thru the troubleshooting in the Helms and it said that it was bad