FS OR TRADE: Bob Tanks? I think.

Ok. These tanks came with my 1983 Sporster XLH 1000. I never even put gas in them so I know nothing about them. I dont know what they are worth either. I think they are called Bob tanks. Look at the picture. I will sell them or trade them. As Is.
Things I need and will trade for.

All for 83 Sportster.
1. Strap that goes around battery.
2. Top cover for battery.
3. Full cover that goes around battery.
4. A Battery.
5. A kickstand and spring.
6. New pegs.
7. A Diffeent seat. ( I dont like the one on the bike.)

If you are not interested in the tanks but know around what they might be worth I would like to know.