taco eater :
devin tryon from san jose, CA United States
I'm using this head on my Hobbit with a Dr kit along with many other goodies the engine stays running cool even during supper long distance rides even with the o-ring head gasket it does not leak around the decompression hole and stock NGK spark plugs work just fine I've had the setup on my bike for almost 2 years and it still rips like the day I bought it
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Fits Hobbit/Express DR Kit!
August 23, 2013
taco eater :
patthesoundguy from Beaver Bank, NS Canada
I put this on my 80 express on a fresh DR kit, it rocks so far and looks cool too .Edit... This head requires the next longer reach plug from the standard NGK BPR6HS. Also the O-ring diddnt quite work with the dr cylinder. The oring sits right on the decompression hole, so I had to use the head gasket from the dr kit. Still a kick arse head though :-) The spark plug is NGK BR6ES or Champion RN9YC or for further cross ref fun these plugs cross refrence to Subaru Justy 1.2 litre EDIT... This just in, you can cut the outside of this head to fit under the shroud of a Honda nq50 spree to use it with the 48mm big bore kit, its radical dude ;-)
sweet 
Fits Hobbit/Express DR Kit!