The only external factory pump I can think was on a F@#d pickup but those are all MPFI so the psi would be to high.I have actually installed a kit from
http://www.affordable-fuel-injection.com/index.php on the 300 F@#d for a GSE tug.All the parts are GM except the TB adapter and the pump .Take a look at the video and you can see the components used and the installation video.Currently American Airlines converts all of their tugs to this set up.The Blue oval guys would'nt like this HaHa .
