I have an KV3L rear head and HRC pipe in my spares, wondering whether its worth fitting to my MC28 which will be pretty much standard bike bar maybe a mc21 flywheel and exhaust? If the consensus is to sell it to someone with a more highly modified bike, what should I ask for these these days? I also have a R rear head which has been damaged by what looks to be an errand roller at some stage in its life, I know BDK have repaired these for me in the past so I'll probably sell that one along too.