I have a 1969 Buick Skylark Custom, 2 dr., Vinyl top, vin # 444379Z126515. I need to know the length of the right rear axle. Currently I can get an axle in 29 3/8 " or 30 ". Measuring it is useless unless I take it out. This is my only transpo. I have so I'd like to know before I can't get around for a 1/2 day. Any suggestions?
Thank you!!

CC