Installing PelfreyBilt Bumpers, need to bump up front?

Yeah I think you'll be totally fine for the time being. Lots of people use 887

 

Yes, you'll be fine. The only reason I felt I needed a new setup is because I wheeled my truck in Moab and the 887's/Nitro combo didn't like the extra weight.

 

when you say ddn't like the extra weight, what did you experience?
when you added lift did you do a differential drop kit?

 

It felt bouncy in the front. In most conditions it would have been ok, but on my trip to Moab last spring with my truck loaded with gear the OME stuff felt overworked in the front. I don't know exactly how to explain. It was mostly in the high speed stuff out in the desert.

No diff drop. Some people think the diff drop does more harm than good in the 2nd Gens.

 

Oh and the guys at Wheelers said the 5100's are supposed to be the EXT version, but model of truck specific, for Highest compatible aftermarket lift, without totally modifying things.

 

there's a site with all the springs and rating of the springs for coil overs, does anyone have that? Maybe it's manufacturer specific?