Hi...I have a 79 cutlass supream it has olds 260 4.3 v8 and metric th200 trans now but I'm putting 350 sbc and th350 in it shortly I was woundering how I can turn my one wheel squeel rearend into a true full posi preferably without changing the whole axel out if possible.....also would like tips on my engine trans swap....I have no idea what gears are in rearend now..any help would be great thanks