Hi im a new member and was wondering if any one has bought a powerbox recently to upgrade the horse power on thier td5. I saw one on ebay for sale brandnew for £320 buy it now and my local independant garage offered me one similar for £400 fitted ,is this a fair price or can they be bought cheaper else whare.What are the most noticeable changes after fitting one of these .I tow a caravan and could do with the more power for take off and hill starts thanks for reading gary.