Thomas:
Your bed strips and angle strips have the same hole pattern, so you can use the bed strips for a guide.
Since you are putting the bed on a new frame anyway, there may be a better place to position the cross sills on the new frame than the old original locations. The kickup over the axle is a lot different on a S-10 than the original 54. it would probably interfere with the cross sill locations. We recommend test fitting the bed assembly to the new frame and choosing the best cross sill locations from there. Order custom strips and angles once you get the dimensions worked out.
Mar-Ktech
