i have measured ke70 seats and still for someone my height to small

i was just thinking welding new supports to bolt to

but then if i get in a prang and its my falt insurance wont cover me.

if you wish to do it the legal way, you can mounts made by and engineer and get them approved.

or buy an approved seat with approved rails and then get that engineered.

there is always a way to do things properly :)