wtb locking gas cap from 80s Suzuki gs550

[elkhart6H]

I am building a bobber based on the honda Cb500K2 but I have chosen a second hand Suzuki GS550 tank for the project. The problem is I need the locking gas cap for it. If you have one for sale (with or without key), please contact me with a price.

Thanks!

gregwaits@tx.rr.com