fuel pump to use for 340/ 3/8" line feed?

[cuda-cable]

have a 340 ......600 cfm  carb which takes a 3/8"  line,  have a new 3/8" pick-up  for my tank so plan to put same line from tank to pump  but need to know who's pump is plumbed as such  since the stock pumps  come  5/16"....thought somebody wouldmake? Holley mech  pumps show 1/4"  npt?....or do i  just want a high volume  pump......thx......

[Chryco Psycho]

I would just use a HV pump with tthe correct size [3/8" hose to 1/4" pipe] fittings

[cuda-cable]

thx, any  suggestion  on who makes a reasonably priced see thru inline filter for 3/8"  line?
 Also  when you put the rubber 'grommet type ' seal  back into your fuel tank filler hole do use any kind of sealer  or does it go  in dry,  and same with putting the filler neck thru from the  back?.......thx...

[Chryco Psycho]

the seal goes in dry , you can put some grease on the filler neck to slide it in more easily