Well hopefully he's using the correct anodize that will stand up to E-85 and E-10 which is fricking everywhere now, hard to find straight gas anymore around here. But if you want to zinc plate you can strip anodize with stove top oven cleaner then go to the zinc stuff but have to use a few extra steps like zincate yadda yadda. Doing alot of stuff wouldn't be that pricey but everything to do just this one thing will probably get expensive fast.