speedways reverse eye rear spring

[oldskool]

i called speedways tech line before ordering there posies reverse eye rear spring for my 1941 coupe because in there catolog it states that 41/48 perch centers are 45" but i measured mine and im getting 46 1/2 perch centers also my shackles are angled out at bottom the guy at speedway says my shackles should be angled in at the bottom,he says i have the wrong spring and buy my perch mesurments i have an early rear possibly a 36 ford,i think he may be wrong ,if someone out there has a stock 41 ford passenger car that could possibly measure the rear perches centers that would help me figure out if i have a stock rear or otherwise...again it must be a 41 ford..thanks ..al