Not familiar with the 98 but it will probably have unc threads
any local bolt stockist will have them can't remember the name of the one i used to know in brum but as stencil says fatbobs, lips, bz warped all carry spare kits but they will be a bit more than what you pay from a local supplier but guaranteed length etc, if you know exactly i can point you in the direction of a one i know in the toon like