Exhaust› Headers, Manifolds and Components
Hooker
Transmission Crossmember 1970-1981 2Nd Gen GM F-Body LS Swap T56, T56 Magnum Transmission Crossmember, For Use With Dse (Detroit Speed, Inc.) Subframe & Suspension Hooker BlackHeart
SKU: H00I 71222006HKR
Moderate — 2–4 hours
Description
It is specifically engineered for 1970-1981 2nd generation GM F-Body vehicles when used with a Detroit Speed INC. Subframe. It provides clearance for a 3-inch exhaust when paired with specific Hooker Blackheart LT headers and exhaust systems. All necessary hardware and floor backing plates are included.
Fitment
Fitment Guaranteed
Don’t gamble
on fit.
Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.
Available on iOS & Android
Specifications
| Brand | Hooker |
| Part Number | H00I 71222006HKR |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
View Full Return Policy