XB2 Body/Shell

[duane.howard]

Can anyone give an opinion on the suitability (or not) and quality of the penguin shell on offer for the XB2 (see link below):

http://www.ebay.co.uk/itm/X-Ray-Xb2-...oAAOSw1S9WewHV

This has the advantage of additional room above the spur gear which is a problem with the standard Xray part number 329700.

I need to decide which one to go for unless anyone know of another variant?

Thanks