Oil cooler and bbr u flow? Will both work?

I am sort of new to all this and I have bought a 05 klx with the kitaco 143cc big bore kit with the 4 valve race head, it has the bbr u flow intake with the 28mm carb kit and I was told I need an oil cooler with this setup and I was just wondering if an oil cooler will fit with the bbr u flow since I thought the brackets are both on the left side of the tank? So I just want to know how the oil cooler will mount up and maybe some pictures if you have some let me know and which oil cooler works better, if I should stick with kitaco since that's what motor I have? Some advice please, thanks