My 14 bolt rear is welded too.No one makes a spool.THe only thing you have too weld is the 4 spider gears too the u-joint looking piece that they are connected too.Looks just like a u-joint with spider gears on the ends instead of caps.It affects nothing else.If for some reason you don't like it you can just replace the spider gears or put a detroit in it.No it won't effect any future gear swaps.