I know this has been discussed a little in the past but the upper and lower radiator hose part numbers for the P30 454 vertical radiator config have been discontinued for some time:

Upper: 6259952
Lower: 343414

I've seen numerous alternative part numbers recommend on various places around the web and have pretty much ordered all of them, and none are suitable for the lower hose.

For the upper, Gates 22086 was almost perfect and will work great, but for the lower hose, I tried Gates 20843 (which was the closest), Gates 21442 and Gates 20842. None of them appear to have a large enough "U" shape to clear the crossmember in the frame like the original hose. I realize I could use a universal hose but has any else found any better options for that lower hose? I'd like to avoid a universal if possible.

Part number 343414 has been discontinued; there is no direct replacement. Recommended options include finding a used original part or having an exact replica made; universal hoses will only fit with modifications due to the shape of the U-bend.