I'm doing a swap in an old car and I'm starting to think about fuel plumbing. I have a fuel cell and was just going to vent to atmosphere but now I'm thinking I should hook up a canister and purge valve. I only have an engine with harness, is it as simple as getting and wiring in the evap canister purge, evap canister vent, and fuel tank pressure sensor? Is there anything else I need to be aware of? What is typically done to remove those that I need to be sure not to do?