recently purchased a blox extended intake manifold stud and nut kit so that i could fix my problem off there not being enough stud left after installing a thicker bisimoto intake manifold heat gasket.

has anyone used nylon washers here before? the stock nuts were simple nylon locknuts without any washers at all while the blox extended stud kit came with non nylon nuts and nylon washers. anyone had experience with these nylon washers or have any suggestions on which path to take? i have been unable to find any info on anyone using these so far