camshaft help

[bax]

I am working on what appears to be a 10 year old ford crate motor, its a 5 liter roller motor with the one piece rear main seal. The camshaft was installed without the spider tray in the lifter valley. Well a few of the lifters had turned and ruined the cam, lifters, pushrods. Well I am looking for a good cam recommendation. Like i said it is a roller motor, with a carb and vacuum brakes.
some carnage pictures.

 

[broncnaz]

Might help to know what useage this engine will see. tire size, gearing, transmission ect. You may get better suggestions. If near normal useage I would probably just find a HO cam if running a oD tranny then a explorer cam might be a good choice.

 

[bax]

I will just put my favorite 270 HR comp cam in it.