Haney - with the 70 tank you can then run the tank fuel pickup with the 3/8" fuel and 1/4" vent line attachments, use the orignal vent line and connect to the 1/4" line at the tank pickup for a recirc from a T fitting at the carb back to the tank. This will delete the vapor canister in the front as well. So that line would be connected up at the carb T-fitting. Restrict the return hole at the carb down to about 1/8" to prevent too much pressure drop and starvation of fuel to the carb. This will help with hot starts in the summer. I did all of this with my 451 stroked 73 chally and with the PSI guage shows 9PSI with the electric pump running, no engine and 6-7PSI with the engine running.