Jason Pettis turned down the upper and lower stock shock stud mounts to .0480 to fit in the heims on the Vikings and I made a bottom plate to raise em up 1 1/4 inches since they were a tad shorter than the Ranchos. So, being they have 6 in of travel I was thinking 1 1/2- 1 3/4 compression and the rest extension, sound right.............