i did swap an earlier seat on my k8 ,grinded off the hinge tabs as they will hit the earlier skinnier seats frame,attached a bracket under the seat .rigged it up so that now a bolt through the what once was the helmet lock frame ,don't remember if i drilled a new hole into that helmet lock attachment thats welded into the frame,,anyways it worked out there's other ways to adapting an earlier seat maybe a hinge ,i installed a battery cutoff switch under the oil tank so i really don't need to be messing with anything under the seat,,you can do your mod just takes patience,,the earlier seat looks a little bit more vintage thats why i did the swap,,,love my k8 it won two show trophies this short summer
,dam i wish it was summer again have to move out of here, there is a toyfortots motorcycle parade coming up Dec7 will be my first,im sure i'll freeze my ass off but it'll be fun