I know the mid 90s Lightning engine blocks are pre machined for roller lifters, I'm not sure about the regular F150s. You might want to figure out which engine blocks are pre machined for roller lifters. If it's an older block that isn't set up for roller lifters, it cost 4 times as much to put roller lifters in there.
They have two 93 Lightnings and one 95 Lightning. It's a shame I don't have help this weekend. I would love to just pull the 95 Lightning 5.8L and stuff it in my Mustang.