I have an aftermarket RPS flywheel for the 90-96 twin turbo 300zx 5 speed, its like 12 lbs much lighter than stock! and its rebuildable for life! these retail for 450$ + shipping, its in good condition, and i rebuilt the inserts like 6 months ago! if you have questions feel free to email me, or call me at 408-600-6504 and ask for alex thanks :) $$260.00 no lower