[Texasdoc]

Pump and filters are external. I guess I didn't say, but I figured my question on using an external pre-filter would have meant that my pump was also external. There is an internal baffle to prevent starvation on corners. Not sure how to use the mat on a tank with internal baffles. Also, not sure how it would have helped my situation - bad fuel clogging my pre-filter, damaging my pump.