2 year old CSI brand SFI approved and dated racing flywheel for 2 piece rear main 350 small block chevy up to 86. They recommend you balance it with your engine assembly for optimum performance. I never did and it ran great, silky smooth. Switching to TBI and can't use it. Low miles, maybe 5000 total. Mint condition, teeth are perfect. Paid 200 and change for it in late 2004. Yours for 75.00 shipped to your door.