[SCOTI]

Back in my days of youth I ran around w/3 different guys that had 64, 66, & 69 chevy trucks that all ran welded spider gears, then moved up to mini-spools & drove them daily on the street. Back then you could get a posi but by the time you refreshed it you were out a couple of bills & man we were poor! Compared, the mini-spools lasted longer, cost less overall, & were generally easier to deal with & open 3.73 rear ends were practically free @ wrecking yards. I'm not talking about little motors either as the smallest was a 406. The heavy hitter was the 66 w/a 427, solid roller, & big juice & he was the only one that broke a rear(pinion on a 4.11 rear w/big slicks). Anyway, for the price of a mini-spool it wouldn't cost much for you to see for yourself. Just buy some machinists dye, coat the axles(preferably new aftermarket stronger ones), scribe a line from hub to splines & inspect from time to time to see if the scribed line is no longer straight. If it is, time for new axles.