Yes the celica ones are 24lbs or so and the truck ones are 30. I have a 85 celica gts that's waiting for me to put my factory 22rte in it with a aftermarket exaust manifold and a supra ct26. I'm just gonna use the stock fly for now with a factory oem 4x4 clutch setup. Sounds weak but it's far from it. However the celica guys seem happy with a 12lb flywheel and some say the 9lb is too light. Though our trucks weigh just a tad less
best mod I have ever done mated with a act hd and 6 puck sprung shifts and drives like butter and rev matches so well now and i find way easier to drive