Does anyone know if any other manufacturer shares the same installed length pushrods as the Crane retrofit Hydraulic roller lifters (Crane #68532-16)?

I am unable to find an in-stock pair of Crane #68532-2's, as they are on backorder until almost the beginning of the year.

I wondered if anyone knows if there may be a suitable substitute available, or if they had a new pair sitting on their shelf???

1970 Plymouth 'Cuda #'s 440-6(block in storage)currently 493" 6 pack, Shaker, 5 speed Passon, 4.10's
1968 Plymouth Barracuda Convertible 408 Magnum EFI with 4 speed automatic overdrive, 3800 stall lock-up converter and 4.30's (closest thing to an automatic 5 speed going)