roller cams for la 360 /questions

JDMopar said
Title says LA 360, so I'm curious as to how you will mount the spider in the lifter valley of an LA to hold the factory Magnum roller lifters?

Locate the spider in the valley, mark the holes and drill and tap them. There are even a couple of companies that make kits to do just that to a small block Ford. Really nothing to it. The engine has to be apart of course.