Recommend oil cooler for air cooled Hi performance motor?

I have been looking for a decent oil cooler for my supercharged kz1075.

I have a lock heart on it now but it's too small. I look at the ones on eBay and they are with too wide 13" or not quite the right dimensions, or too cheap looking (Chinese specials).

I'm also a fan of the curved oil coolers but they are tricky to find.

Not sure if anyone has a go to oil cooler for this kind of thing.

Thanks!

Look at car transmission coolers....They are fine for motor oil, and have a variety of styles and sizes..

yeah I was gonna say sumthing like :
http://www.ebay.com/itm/BLACK-7-ROW-10AN-ALUMINUM-ENGINE-TRANSMISSION-RACING-OIL-COOLER-FOR-CAR-TRUCK-D-/111220954575?pt=Motors_Car_Truck_Parts_Accessories&hash=item19e54915cf&vxp=mtr

Ya I have looked at some of those the problem is the length, that one in the link says 12" but I bet it's 13" end to end. What I am trying to avoid is the long box across the front of the engine as I feel it really disrupts the lines of the bike. The maximum length that I find is reasonable is 9" which it gets harder to find a suitable option. I have looked at some OEM ones online but they don't list the dimensions usually. I have a buell one that would fit but I'm thinking it may not be big enough..

http://www.ebay.com/itm/Radiatore-olio-BUELL-XB9S-XB12S-03-06-Oil-Cooler-Olkuhler-/171253706741?pt=Ricambi_e_Accessori_Moto&hash=item27df842ff5