Another option is the Weldon, I mounted mine on the firewall on the inside, certified pump that's been around a long time, internal bypass valve so plumbing is a bit easier, was able to eliminate the 'dog house' which helps leg room.
Downside, more expensive.

weldonjpump.jpg


https://www.aircraftspruce.com/catalog/eppages/8120gweldonpump.php?clickkey=14901
 
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