Just testing the water incase one of the members would like to upgrade their back box. Long story short... in the next week or so I'm planning to remove the above mentioned SuperSprint back box off my Cecil and reluctantly revert back to OEM heavyweight pee shooters
It was originally purchased by me (brand spanking new) few years ago and it still remains in "As New" condition without any corrosion or dents.
Most importantly it sounds great
SOLD 
Few pix below of its current condition.