Which carb is best?

[dendeanda]

I go to the bech alot and in dunes. Which carb would be best for this situation but at the same time not getting crazy with money? I have a q-jet right now but have a problem with sand getting in the linkage for the back barrels and they keep getting stuck open. 85 blazer 350

 

[Big GMC truck]

Recently, I bought a remanufactured q jet from summit for my 1984 GMC K1500 305. I have been very pleased with it so far.