Can anyone tell me why the GoWesty Kit is a little more than a third of the
Vanagain.com kit?

Is there any major difference except for the cross over tube and metal
clamps and what would you recommend or what have you tried.

http://www.vanagain.com/images/gastankkit1.jpg   $92

http://www.gowesty.com/Merchant2/merchant.mvc?Screen=PROD
<http://www.gowesty.com/Merchant2/merchant.mvc?Screen=PROD&Product_Code=VANO
TANK&Category_Code=mp-fuel> &Product_Code=VANOTANK&Category_Code=mp-fuel
$35

Thanks,

Chris