Gears & Axles - 8.8 build, couple questions

hey guys just getting ready to start an 8.8 build looking to hold 500 easily. I hear the explorer rearends have 31 spline axles, positrack and from what ive heard thats the one i want to buy. is this correct? does anyone actually like make a swap kit of anything for the Torque arm mount??? or does it all have to be fabbed up? also im looking to do a 3.90 ish gear. what differential would you guys suggest. opinions on e-locker with 3.90's?? what all would i need ei. axles, bearings ect??

Try this for size.......
http://m.ls1tech.com/forums/showthread.php?t=1478765

Just my .02 but

The explorer rear is the most sought after because of the posi and 3.73 or 4.10 ratios that come in them. If your swapping gears and differental cost wise you would be better off buying a bolt in 9".

Just my .02 but

The explorer rear is the most sought after because of the posi and 3.73 or 4.10 ratios that come in them. If your swapping gears and differental cost wise you would be better off buying a bolt in 9".

so in saying that post people just keep the diff. thats in the explorer rear end? are they strong posi units?