Opening Pandoras box

[Oldschoolpony]

Well, after alot of magazine reading, I've come to the conclusion that I have FMS rear axles, not strange or mosier. They are 4 lug, not 5 lug and dont have any extra holes for extra lugs(conversion). This comes on the heels of trying to get more rubber to the ground ie: 15 x 8 Weld pro star 96 series and some MT's or BF drag radials.

My question is, I know my vehichle has 410 posi, How can I identify the maker of the differential? what if its 28 spline? what if its 31 spline. So far I'm getting 431 rwhp and plan on adding 125-150 hp power adder. Oh, and 456 gears.

Any thoughts on where to buy either starnge or mosier axles? at a good price? If I need the differential, then any ideas where to get a package? Auburn pro, axles and c clip eleminators, LOL I dont even know if it has c-clips or they've been replaced with the eliminators...................They draw backs to buying a car from someone who knew nothing about what he spent his money on