supposedly, the 997 kit won't work with ours according to Wiseco catalog. 945 or 970 are the alleged options available to us. but i've never compared or measured wrist pin height, skirt length (rrrowwwrrrrr !) or weight of stock or of my new Wisecos. the ebay ad mentions 900RR model years that are allegedly "piston compliant" with our motors. not sure what to make of it all. what do i know? i bought lousy little 945's ! girly pistons. with fingernail polish on them. and maybe a hello kitty sticker.
yes, that SHOULD require resleeving from what i've learnt.
sorry i can't help more. if at all.