gas tank filler tube...renew

Put in new gas tank and decided to reuse the original filler tube. Outside of filler tube is nice & shiny now, but the inside is real nasty. I'll probably sandblast the inside to get it clean. I was going to paint it afterwards, but will paint hold up to gasoline? Would powdercoat hold up better against gas? Thanks in advance

I usually coat the inside of mine, after they been blasted on the inside with Eastwood gas tank sealer,.......been doing that for 20 plus years with no issuses

Thanks, didn't think of that. That's the way I'll go.