Forgot to mention, but I bought direct from Frank Parts in Germany. They have a good on line sales service and even with postage ( a reasonable £25 to UK)worked out almost £200 cheaper than Trojan! Considering Trojan are UK based where I live, there was no contest in me ordering direct from Frank Parts! Trojan sell the same kit for £390 + UK vat!
See the Frank Parts link in my 'Fighterbolt' thread on the 'aftermarket' forum for XBR. Buying the brackets alone is quite expensive even from Frank Parts, but the whole tail kit I think is reasonable and it is good quality, but the gap between the unit and the frame differs from that of the airbox cover, but see my pics and how I rectified this.