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Trouble is, magnum 5.9's are 1992+ but the 1996+ transmission is not usable because it's electronically controlled.


This is what I am hearing. The 518 sounds like the best candidate but I am concerned about the tunnel clearance.



Holley makes a TPS sensor carb adapter for electronicly controlled transmissions. Works for the 4L80e GM shifting, and the 518 might be similar working of the throttle position.