Hi all putting my 1641 up for sale 1641 with twin kadrons ,alternator conversion new pump ,points ,coil only done about 1000 miles ,zero end float with great compression,the code is b 4 numbers ad think it was a remanufactored case ,OK the bad have had fuelling probs right hand carb not putting fuel down just rebuilt them with Kaddie Shak kits from the states and the problem is still there ,suspect a duff carb but who know lookin for £1000 can watsapp a video of it running came out of my bay so has the mounting holes its owes me double this so a bargain for some one ,cheers rob.