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GM A-body / F-Body / G-Body / X-Body 1964-74
and 4L85E Automatic Transmissions with PRNDL Switch
390 GT exhaust will not fit
Optimized race calibration
Trans-Dapt Valve Cover Hex Head Nuts 4.25" Tall HYPL11SASM61 GM A-body / F-Body /Trans Dapt Performance 1 4" 20 X 4 1 4" "Hex Stud" Style Valve Cover Bolts Chrome Trans Dapt Valve Cover Hex Head Nuts 9182 4. 25" Tall 1 4 20 x 1" Threads Chrome 4 pc. Valve Cover Hex Head Nuts Each member company of the Hedman Performance Group is a specialist in the field they serve. Hedman hedders specializes in headers, Trans Dapt Engine transmission swap mounts, and Hamburger's focuses on oil pans. Trans Dapt offers a wide range of custom engine
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