Took 250 out of 66 k10. 292 is going in its place. Moved passengerside perch forward. Frame holes were all there for alignment and fit. Now looking at perch it appears the passengerside perch sets up higher than the driverside based on frame geometry. Am i looking for something that levels or do things work out when motor mounts are bolted to engine? Or is the whole experience an illusion.