Beefing UP The Front Toyota Axle Options...

well i am slowly peicing together a SAS build (so slow that i dont have the truck anymore)
i have the axles and motor of choice

I dont want to really use stock internals of the 85 Toyota Axles... I have found two options and need some advice...

FIRST
Longfield Heavy Duty Front Axles (priced anywhere between $600-700)

We are proud to be a direct Longfield dealer. This is the premiere Toyota axle upgrade kit. Longfield Super Axles! Kit includes two extra large 4340 chromoly 30 spline Birfield and two 30 spline 4340 inner axles. Birfields feature 300M inner ball race. Includes two Birfield inner axle C-clips. Lifetime warranty against breakage. Simply the best kit for upgrading your Birfields. Fits Toyota Pickup and 4Runner sold front axles. May require minor grinding of housing for proper fit.
Installation on an FJ40 Land Cruiser requires replacement of the entire outer knuckle. These parts are not included with the axle kit listed below and will need to be sourced separately. Outer knuckle parts can be used from 79-85 Pickup and 4Runner solid front axles.

SECOND and THIRD (THIRD IS BASICALLY THE SAME JUST STRONGER METERIAL)
both where found off http://www.ringpinion.com/Default.aspx

YA TNOBIRF-A $494.66
Yukon 4340 Chrome-Moly Birfield eliminator axle kit '79-'85 Toyota pick-up and 4Runner. This complete kit comes with inner & outer axles, spindles, Dana Spicer U/Joints and misc small parts. Yukon 4340 Chrome-Moly axles provide up to 50% increased strength over stock axles for use in extreme performance applications with large tires and high horsepower. Yukon’s 4340 axles are manufactured using the latest technologies and the highest quality materials to ensure high strength and long life. Limited Lifetime warranty covers manufacturing defects and axle breakage for as long as you own the vehicle. This warranty is not transferable to another party. “No Questions Asked” replacement for first warranty return, however Yukon reserves the right to either replace axle or refund original purchase price after the first warranty claim. Yukon (through Randy’s Ring & Pinion) makes final determination on warranty considerations. Some machining is required.

YA TNOBIRF-A-SJ $757.34
Yukon 4340 Chrome-Moly Birfield eliminator axle kit '79-'85 Toyota pick-up and 4Runner. This complete kit comes with inner & outer axles, spindles, Yukon Super Joints and misc small parts. Yukon 4340 Chrome-Moly axles provide up to 50% increased strength over stock axles for use in extreme performance applications with large tires and high horsepower. Yukon’s 4340 axles are manufactured using the latest technologies and the highest quality materials to ensure high strength and long life. Limited Lifetime warranty covers manufacturing defects and axle breakage for as long as you own the vehicle. This warranty is not transferable to another party. “No Questions Asked” replacement for first warranty return, however Yukon reserves the right to either replace axle or refund original purchase price after the first warranty claim. Yukon (through Randy’s Ring & Pinion) makes final determination on warranty considerations. Some machining is required.