Disassembling a frame for blasting

[Mack B]

Hear my tale.

I have 2 questions related to sandblasting a frame.

1. The frame has a lot of surface rust. Would it be wise or even necessary to remove the cab mounts, bed mounts, core support mounts to make sure no rust is in between them? The truck is to be a driver, but I don't want rusty streaks showing up later if I can help it.

2. All riveted in crossmembers are to be replaced by porterbuilt crossmembers except the radiator support and rear most crossmember. I had planned on removing all others before I take it to the blasters. Today while removing a janky homemade hitch, I found a big ol' crack in the rearmost crossmember. So it's now coming out as well. This leaves only the radiator support to bridge the two halves together. How much grief am I asking for if I take the frame completely apart and bolt it all back together?