what is the best way to install drain plug. thanks

 

B&M makes a good one, just drill a hole in the pan, put the bung in and have someone who can weld really well weld it in. I did it on mine and i thought i was a good welder, im not. Leaked like a siv.

I didn't put one on my new pan but definitely good to have.
Good Luck

 

http://www.bmracing.com/PRODUCTS/Tra...Drain-Plug-Kit

There it is, if you can get a deal at a parts store they are something like 5 bucks