my 99.5 1.8QM has seen better days, due to living up in salt-laiden roads the rear axel plug became seized so baddly that when I unscrewed it the threads all broke off. I'm currently using something that's basically a squeezed rubber piece as a drain plug but it's only a matter of time before it starts to leak or fall out completly. I'm having trouble locating a 22mm oversized drain plug as a replacement. Anyone have any suggestions where I could locate one or what else I might try bar going out a buying a BA tap-n-die set?

 

tap and dies your best bet bro.