Is a Walbro fuel pump compatible with the stock 300 ZX turbo fuel pump.
If not what would you recommend?? What's the price?

Yes, they have them on ebay specificly for 300's they run about 100 bucks including shipping.

i dont know, i know the TT fuel pump out flows the 255, but the NA(90-96) flows less. i wonder how it compares to the first gen...

the walbro kit for the s13 works fine for the z31's, i have install instructions if you want them.