My buddies "Cheese" and "Hollywood" at Safe Air One installed a set in my RV4 2 years ago, best 8.8 lbs I ever added! I also have a set in my Rocket (54 gal total) which in the high teens on O2 make it truly a long range(850NM) airplane. Absolutely outstanding!
Smokey
HR2
When full, do the ER tanks impose any handling changes in roll rate or limitations on flight (no spin)?