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Message: <blockquote data-quote="carl62cycles" data-source="post: 5787" data-attributes="member: 443"><p>I was once told that the 1200 engines were wider and wouldn't fit on the frame without mods.Wanted to fit a 1200 engine in myself .If your 1100 engine is out try fitting the 1200 cases in the frame to see if they do fit.Will be cool to see if they do  :good: . .Rods are a bit longer but that would be the cylinders only I guess :headscratch:.clutch would need the hydraulic or mod the case for the cable which allready has.If cylinders are longer you would end up with shorter boots connectors to the carbs.probably find longer ones from some other bike from that era :read: .Or slap a complete set of carbs from an 84 and problem solved (air box included in case is different too)Had an 87 interstate but never got to match them up cause didn't have the problem with my existing 82 asp at that time.Sold the 87 didn,t like the rake on the bike and handlebars....... too smooth of an engine and so on and so on...... only liked the speed (fast machine).You will need longer rods also.Your mod would be tougher than throwing in an entire engine in,but doesn't mean that it can't be done :music: .Hey Dan probably you can match your engine cases against each other as to the mounting on the frame.What do you think :laptop: .</p></blockquote><p></p>