wouldn't Chevy have had more than one 4x4 model in 1993?
there's not a whole lot of difference between the various stock BBB exhaust manifolds, they're all rear dump. i suppose you could try flopping them backwards and seeing if one side could loop to the front and then come back down the other side?
www.TAPerformance.com has shorty headers, i have no idea if they're going to fit your application.
have you tried shifting the mounting points? the BBB engines ( 400, 430, 455 ) have 3 holes for engine mounts on each side of the block, but only two holes are used at any one time by the engine mount. Buick did this so they could adjust the position of the block as necessary depending on the model the engine was being installed in.
obviously, using the middle and front bolt hole means maximum back set for the engine and the least nose weight. it's about a 3" back set versus using the rear bolt hole. this may also give you the exhaust clearance you needed.
The way to crush the bourgeoisie is to grind them between the millstones of taxation and inflation.
Vladimir Lenin
Government schooling is about "the perfect organization of the hive."
H.H. Goddard, Human Efficiency (1920)
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