ok i'm looking to do my complete fuel system...but i'm not sure what size fuel pump will be good enough? walbro255?? what do you guys think??i have a b20 in gsr shell...so i'm thinking there is a gsr vtec fuel pump in there...
stock 0r aftermarket???

 

Fresh pump wouldnt hurt...cheap insurance...you can pickup a 190lph for like 80 or so...the 255 is maybe 95-100?

I ran a 190lph Walbro in my C5 EK to be safe...plus room to grow later on...for boost I would probably step up to a 255 though

 

I know someone that successfully uses a stock CRX pump on a K24 swap. Stock is probably fine for your application.

 

255 is big enough for most stuff. you would probably be fine with the stock pump on a mild 1.8L