Got a '87 TBI. Is it best to try to find an internal gas tank fuel pump or go for an exteranl and carry a spare? I do a bit of mudding so please factor that it. I though of mounting to the famerail and boxing it in to protect it, but i am not sure if it needs air flow to keep it cool...also PN's of pumps you use would be appreciated -zakk '77 1-Ton K5 CK5's MOAB 2002 OR BUST!!