I am looking at a 88 R100GS, have not yet physically inspected it yet but here is the scoop. It has Mikuni carbs with K&N cones. In the photos it looks very good, extra 21" front wheel and bags etc. The owner is sending photos along with history of maintenance and mods. However....he is claiming 90 hp from the engine. I have owned several airheads but 90hp seems a bit of a stretch. Is this type of HP even possible and still have a reliable engine? Were the 88 GS's a good bike compared to the later 90's versions? Any comments (even snide ones), analysis or anecdotal input appreciated.