After giving everything a once over and determining what it would take to make it work I decided it isn't worth the time or the money. A replacement fuse alone is over $100, so one mistake would be very expensive.  I would basically need to rebuild the entire forward section, and I am unable to locate a tank that would fit that would be large enough for any flights longer than a few minutes, which defeats the idea behind the conversion in the first place. About the only size tanks I could find that would fit are 4-6 ounces.

The floor of the battery tray is about 1/2" from the wing, and the battery is about an inch thick, and sits just below the canopy, so I couldn't find a tank 1 1/2" thick that was narrow enough to fit.

Add in how much weight would be added with the additional plywood that I would need to add to beef it up, so going to keep it electric and just use a bigger pack.