No, they are the same. Just be sure to properly lube the bolts and washers, it is more critical with aluminum heads than iron ones. Use a Teflon-type sealant on the threads, and I like to use a moly-type lube on both sides of the washers. A retorque is also a good idea. If you cannot do a retorque after the engine run-in for whatever reason, then after you have initially torqued the bolts during the assembly, back off each one a 1/4 of a turn, one at a time, then retorque to specs. It still is a better idea though to retorque after engine run-in. I like using studs too instead of bolts.