Not a fan of the factory LeMans rod bolts. They are necked down in the shank, plus they have a "Tri Lobe"threaded end, kinda like the threads are distorted , I assume as an attempt to make the bolts kinda a self locking bolts. The rods themselves are quite sturdy (but heavy), but I always replaced the rod bolts (capscrews, actually), with SPS or FPP non shanked, straight thread bolts many years ago, or ARPs later on.