Just had a squirt through BMX Plus Apr 92 and...
Pedals: You can go for readily available stuff like Sharkbites, Triple Traps, etc.
Seat: Odyssey Pro, Team, z77
Grips: A'me Round, Tri, ODI
Lever: DC MX-1 (if you're running a v-brake/canti) or Tech 77 if not.