Petcock help for a 1986 suzuki sp200?

Question

i wanna buy this bike its a 1986 suzuki sp200 but the only problem is the gas tank rotted out cause it was sittin around and its a metal tank. i was jus gonna have my bro weld some sheet metal on it to fix it instead of buyin a new one cause its hard to find and its expensive. but i jus need help wit the petcock. my first question is does it matter which petcock i use, or can i use anykind, and wat do i need to put it in the tank (just a hole and the bolts welded inside to s***w it on) or is there something else i should do, and where can i get a cheap petcock (im not lookin for a fancy expensive one lol, jus any old one will work, and if it helps ill include a picture of the gas tank, i havent welded the sheet metal on it yet. (and yes i know i have to get rid of the rust inside ive got that covered im gonna use kbs 3 step kit) plz give me websites to buy the petcock if u know any, thank you

Answer 1

weld the retaining nut on the OUTSIDE of the hole.

any bike shop should have a petcock valve(not expensive)doesnt matter what make.

hope ive helped you (again) lol

Answer 2

http://www.bikebandit.com/parts/

Buy the petcock for that model.

Go to - your bike - Fuel c**k

Answer 3

to seal out & stop rust: