The Stovebolt Site Forums The Parking Lot Big Bolts New Process 540 application? will it swap?

Yes my question is about the input shaft. You say there is a short input shaft that will allow swap to pretty much anything without much modification. Do you know the diameter number of splines and length of that short input shaft? I’m looking to put a NP540 in my Chevy that has a L6 261 / SM420.
Thank you