72, 307, standard what rear end ratio

[peglegs]

damn this is a tough seller to deal with. i have to drive 1 1/2 hrs to look at a 72, 1/2 t., 2wd, 307, 3 or 4 sp.? has a floor shifter so its a 4 sp. i cant take off the cover it'll make a mess & almost had an argument with her to walk out back and look at the glove box sticker she finally agreed when i asked her if she really did want to sell this or not geeze! it said "posi-traction rear axle J70" on the sticker. i looked in the faq & did a search but couldnt find anything definite & should be 3:42 or 3:73 i probably wont look at it if i cant find which ratio it is and will not buy it if ultimately cant take off the cover off.

can someone tell me what the J70 is? and if all looks good is it worth the $250 she's asking? thats not what ill offer but she might not budge
ty all again