Modding TK70 with XHP70?

Just wonder if that’s possible? from Old Lumens post here. Looks like it’s a very nice upgrade. Cree XHP70 up to 4022 Lumens and XHP50 up to 2546 lumens - Multi-die leds. - #4 by Old-Lumens

What you guys think? Those that upgraded their Fenix TK70 to XML2 would you guys put the new ones on? or are they too hot or requires too much voltage/amps or different driver?

Those xhp70 are bigger enough for reflectors of tk70 and the voltage us higher too, you will need a new driver