Hot Rods 35 36 1935 1936 rear radius rods wishbones perch width

got some conflicting messages about stock width on rear perches for 35 36 can someone measure for me? i read here in two posts 45 3/8 and this chart from ford barn says 48 1/2 .....

 

here is the other info .....from "ford axle" thread

 

http://www.jalopyjournal.com/forum/showthread.php?t=55439&highlight=35+36+perch+width+rear
here is the pic included with the above info ....maybe he means spring eye to eye....its a little unclear.

 

bump.....

 

Just got back from the shop. My stock '35 Ford Banjo w/radius rods = 48" center eye to center eye.

 

thanks joe..........i gather the 35 up spring fits all ....so i figured they would all be close.