2006 honda rancher trx350 question

i recently bought a new carburetor for my 350 rancher. i was going to install an inline fuel filter. anyone do this ever? good idea? if so what size is the fuel lines. 5/16" , 1/4" , or 3/8 cant find info anywhere? also does the plastic clear ones work good, or should i get a metal cnc macined one? any help would be greatly appreciated.