We were talking about this at the bbq last night. I think toyotas have some sweet axle upgrades, mainly the longfield 30 spliners, but then you just start breaking third members, and don't tell me you don't guys because every junk yard I go to has them removed
. OR you can't keep hubs, knuckles studs alive etc. Yes they make upgrades for those also. But did you really want to spend 1500 dollars on upgrading the stock parts of a toyota axle.
I run dana 44's on the f and r of the zuk and have a stock 1.6 liter in it, and I have broken axles with just 36's and 80 hp. Yeah I could upgrade it, but do I really want to spend 600 bucks on shafts and u joints to polish this turd. Nope I 'm building bigger and better and started with a 60.
I think you will find the consensus is that with around a 35-36 tire and small to moderate power a 44 or toy axle will be ok. Yeah you might break every once in a while like I have, but you don't need a 60. But of course I'm sure your gonna have some guy after me that says I run 44's on my stock toy axle