installing an oil cooler on an RMR 125 help

Hi guys,just looking for a bit of help I'm wanting to install an oil cooler on my rmr 125 and was wondering how to go about doing it ? I've found this kit on eBay : item number 141205116850 for 125's and 140 cc bikes, my bikes been bored out to 150cc but I figure it should still work ,anyway everything is included in the kit apparently so I'm wondering with this kit is it just going to be a case of drilling and modding the oil filter cover for this to work or will I need to tap into else where in the engine as well ? I would appreciate any help with this and maybe advice on additional parts I might need ..I seen a video of an oil cooler installed on one of these bikes on YouTube and everything looked like it was just the oil filter cover that was modified for it to work but all advice appreciated .Thanks

The kit: http://item.taobao.com/item.htm?id=15817582908

Thanks ,so I'm guessing the eBay one is no good for my bike .Ill order this one tonight :thumbsup: