freeze plugs for catch can on b18c1

when you remove the stock catch can to put a new one in i hear somethign about a freeze plug to put in the block . . . anyone have any info on the BEST way to put a catch can on a large allmotor engine thanks

also my main question is does anyone know where i can get the proper size freeze plugs, and or how to install it the right way. . maybe some pics ??

thanks
Jay

 

Z10 sells the plug you need. It is 20 from them.

 

TY sir