Vin trouble

Yes it's garbage, original owner said it had a slant 6, I dropped in a 360 and 727 and it broke the ring and pinion on the first test drive.. Currently installing the 9 1/2 from my scrap ram1500, I don't mind 2 different bolt patterns
Actually, its a 9 1/4 . Also, what leaf spring perches are you using? I think the 7 1/4 axle tubes are smaller than the 9 1/4 so the spring perches are different and the Volare springs may not mount properly to them,