We started down the 241/205 route a few years ago (no plans at this point to revisit that) but we do have a few 31 spline shafts left that fit Ford 205 input gears (direct fit in big bearing GM cases). If you decide to got that route, I think we have 5 or so left.
My 241/205 was a great project for my college-kid-budget Blazer. I sold that t-case setup ~4 years ago I think, but it never failed me. Without machine work on the adapter, nothing was really aligned and that would kill splines/bearings if I put more than a couple hundred miles on it a year (trailer queen since 07 or so). Not sure how many miles it would've lasted, but not something I'd consider for a daily driver.
The 31 spline shaft between the 241/205 was always the part I was most afraid of. With 2.72:1 in the front gear box, any time you have the first gearbox in low, the intermediate shaft becomes the weak link in the system. Even though the 31/32 spline connections were the "heaviest duty" connection on the pre turbo diesel stuff, when you almost triple the torque on the input the shaft between the 241/205 becomes the weak link. Weaker than the 205 and, if it breaks, means no power to either axle (and if you think it's hard to find a new shaft at home/surfing on the internet

)
The stock/welded 241 case wasn't awe-inspiring either.
Most people that have seen the other planet boxes with 23/31/32 spline intermediate shafts would be surprised how often we get calls to fit our Magnum shafts into theirs because theirs are broken. We don't do that, and they wouldn't fit anyway.
To me, we know our Magnum isn't cheap but I think the value is there. We us OE ring gears/planets and the huge main shaft is US made heat treated chromoly steel, more than 200% torque capacity of a 32 spline shaft (the biggest "budget" planet box shaft). You can (and I did) build a cheaper setup, but
Personally, I sold my 241/205 setup complete and replaced it with a Magnum/205. Gearing stayed the same (which I couldn't imagine being better) but the planet housing and intermediate shaft got WAY stronger. But, I did design the Magnum, so I might be a slight bit biased

we did it for a reason