Hey guys, just wondering what determines if you should box the frame or not? I'm working on the 51' F1 and it seems like the frame is pretty stout, but it is carrying the 429 in it. are these frame sufficiently strong and rigid for this or should I go ahead and box it?

when boxing do you have to cut a long piece and weld saw 2-3 feet at a time or can you do it in pieces? I'd guess the fewer welds the better? doesn't seem like it would be too expensive, just time consuming.

Red