Need quick answer on lifter crossover tube!!

im building my 318 up and putting the lifter crossover tube in it. i did all the other mods but was just wondering if it was absolutely critical which way the tube went as long as it linked the two gallies together. all the pics ive seen go from back of right galley to front of left. i have 3/8 NPT to -6 AN fittings but it doesnt look like they will fit between the head oiling passage and the lifter bore. can i put the crossover from front of right galley to back of left?? trying to get the block to the machine shop tomorrow, thanks