Here are 6901s on my car. They fit slightly different with the aluminum heads than they did with the stock iron heads. Bruce
I had some friends helping me bleed the brakes so I got some shots from above. Hope this helps. Bruce
My 6901's fit ok. Had the usual problem with one tube getting hit by the linkage during a hard left hand turn. It eventually dents the tube just right. LOL Had to do some grinding on the flanges because I'm running head studs instead of bolts.