New Alto High Energy PowerPack 3-4 Friction and Steel Plates 700-R4, 4L60 and 4L60E for 1982-on. A74100CPK These plates are HIGH ENERGY plates made with high quality green / kevlar by Alto. This is a PowerPack made by Alto that is designed to increase your 3/4 drum from 5-6 plates to 8-9 plates for increased torque. These plates are NOT the tan lower quality plates that others are selling. These are the high energy green plates. If you have a need for the Alto Red Eagle 3-4 PowerPack, we have them in stock as well.