#K400L3. Fits all GM TH400 transmissions 1965 up. This Combo Kit comes with all of the parts we use in our level 3 400 Raptor transmission. You can buy other small parts and a torque converter at the same 10% discount rate. You get a high performance Fairbanks TransAction Shift Kit, a 34 element sprag and drum with over twice the holding power of the stock 16 element sprag, the front intermediate band is replaced with a wider 4L80E black carbon fiber band, an Alto Red Eagle master rebuild kit with red clutches, Kolene steels and all three Power Packs – -forward – – intermediate and direct, plus a free PATC shirt. Plus you get a hardened Billet steel input shaft, drum and forward clutch hub. This combination is good for motors up to 1200 horse power. There’s a 10% discount on this level 3 TH400 Combo Kit plus you get a free T-shirt.