Nope dont have any spare centre diffs unfortunately. Actually I do have one already welded but the bottom pinion is going to need to be re-set again if at all possible as the guy welded it on a slight angle grrrr...) I dont like my chances though, however I'm going to give it a shot sometime.
FYI, if you weld the centre diff you dont need a 2WD locking spline (viscous coupling eliminator). You can just use the oem viscous coupling to hold the transfer shaft in place if you're looking at a dedicated RWD setup. But If you're going FWD, then you can get rid of the viscous coupling and the transfer shaft to free up some rotational mass and just use a welsh plug with some loctite core and cup sealer around it to close up the hole where the transfer shaft usually comes out the gearbox and slides into your transfer case. What are you planning on doing anyway?
If you dont decide to use a welded centre diff, then you use a 2WD locking spline instead - you use one method or the other. A welded centre is 1000x times stronger, unless of course you want to convert back to AWD later.
But if you are 100% going to go with a dedicated FWD or RWD setup, then I highly recommend NOT to use a viscous coupling eleminator (locking spline) as your method to lock up the centre diff. It will smash the internals of the centre diff without too much effort and scatter pieces of the spider gears and cross-shaft throughtout your gearbox and cause a lot of damage. The ONLY safest and strongest and cheapest way is to convert an AWD box to FWD/AWD is to weld the centre diff IMO. Leave a 2WD locking spline for those whom cant be arsed pulling down the gearbox to get to the centre diff because their risk of failure increases dramatically.
Might I just add that if anybody is planning on welding a GOOD centre diff up, please reconsider and let people know before you do it. There may be members in here whom have internally damaged centre diffs (that are only good to use for welded centre applications) that might want to swap you their damaged one + $$ your way for your GOOD one. It'll be a shame to see good OEM centres go to waste.
