I have a 82 Honda cb750c. I need a tank and tires to get it road worthy. What I am wondering is I want to put a bigger tank on it and where can i get custom or just a bigger tank that will fit for a decent price?? same with tires ??? I want to get it fixed so i can start rideing.where i need to repair it should i spend the money and put on custom parts  and tires or go original. I dont want to pay 500 bucks for a tankthat wont fit??/ please give all and any ideas and web sites  

You might try a MC wrecking yard. Take some measurements of the tank, mounting brackets and location of the petcock and talk to the counterman. Good Luck