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I had ERC measure a conrod for me (because I don't have one handy and can't for the life of me remember how long it is). Turns out I was wrong. It is neither 6 3/8" NOR 6 5/8", it is 6 1/8". But no worries to be had. A quick search and found that the A65 and A10 have the same crank journal, only the A10 is 6.5" CtC and the A65 is 6" CtC. So I'm still in good shape. http://www.mapcycle.com/map/index.php/categories/engine/bottom-end/con-rods/conrod-a50-a65-6-0-4340-h-beam-pr.htmlAlso, I just noticed that the Nikisil T120 pistons for $300 are for the Big Bore kits starting sizes at 76mm, which is way to big for my needs. For 1 it will exceed 750cc which will put me at the bottom of the 850cc bracket for Bonneville. Plus I don't think the cylinders can take that big of a bore. So a No-Go on those pistons.So I'll need to spend $350 for the full race forged pistons:http://www.mapcycle.com/map/index.php/categories/engine/top-end/pistons/triumph-t120-tr6-650cc-forged-pistons.html Or $100 on the "High Quality" cast pistons, that seriously look like a damn good piston for $100.http://www.mapcycle.com/map/index.php/categories/engine/top-end/pistons/triumph-650-1958-later-piston-set.html