Header fitment rant, Doug's

tti location measurements

CHECK THE ENGINE LOCATION:All K-members are not identical and the dimensions must be checked to ensure proper fitment of the headers or exhaust system. If the engine is not located correctly in the chassis our products will not fit properly. If necessary place shims between the insulator assembly and the K-frame mounting pad to achieve the proper factory dimensions.Shims: For small position adjustments, shim packs are available through Schumacher Creative Services of Seattle, WA.From the center of the crankshaft to the top of the K-frame the correct distance is (A). The engine is also offset towards the passenger-side(B). Measure from the center of the crankshaft to each frame rail, the difference should be (C).Factory Engine Locations -SBA(inches)B (inches)C (inches)67-76 A-body
A=5-1/4
B=1-1/4
C=2-1/2