Sorry for the late response, I'm to busy.
Befor my AF I had a 04 RMZ250, wich had stock to small radiators. In Holland we have mostly deep sand tracks and
the rmz was prouwn to get hot. So the dutch importer of Suzuki orderd overseized radiators for the "dutch suzuki's".
And I think they are only in Holland. I had to give mine stock pair to them and got new overseized own's for free. Only I bought mine old ones back.
The special ones are hand welded, I thought it would be a better choice and easyer to weld on.
I believe the 08 are longer than what I've used. It could become an isseu. On E-bay you can buy overseized kx500 radiators. If I would do it over I would use those because I think they are shorter than mine's now.
Don't know If you gone run a bigger fueltank? I have a IMS and the left radiator hits it for 1.5 inch.
Dutchie