I copied this when Dog posted awhile back: 5.9 mag (360) external balance is different from a LA 360 external balance amount. 5.9 mag-use OE 5.9 flexplate/neutral converter. 5.9 Mag imbalance is in the flexplate. 360 LA imbalance is in the converter. 5.2 (318) mags are internally balanced as are all LA 318. 5.2/5.9/LA 360 use the same oil pan (sump locations vary of course-need different pickups) but use mag gasket with 5.2 & 5.9 pan & LA gasket with a 360 LA pan (on a mag block I am assuming he meant). this ain't helping you with a stick app & someone had posted something about some 5.9 mags haveing a different balance than other years of 5.9 LA (Dog will (likely) clarify when he comes to).