I mod stuff. I've modded my Gibson Les Paul Deluxe (gouged routings by previous owner, I had them fixed by professional luthier) my Fender Am Deluxe Strat, my Jazz basses, guitar amps (different tubes, speakers).
I (officially) received an MIM Jazz V Standard for Christmas. Officially, because I bought it several months ago on eBay, 2012, mint, $399. I put it away, in my wife's closet, for her to give me for Christmas. She bought her own gift the same way. We each got smaller surprises.
Anyway, I already have a set of Quarter Pounders, a set of SCNs and a bridge Norstrand noiseless, all for 5s, all of which I bought cheap, used here on TB or on eBay. I also bought a new Audere pre, which is in my sock drawer. I have been buying Hipshot tuning machines one at a time over a period of months, in anticipation of this bass. I did have to order and pay retail for the treble side machine.
Anything I don't use, I can sell again on eBay, usually for the same price, maybe a couple bucks less.
If I decide to sell the bass, the original stuff goes back on (almost as much fun) and the good stuff goes up for sale, or on another bass. Whoopee
I find it interesting to do the research, find the bargains, do the work and setups and sell it all and start over.
Taken just for you. Modded many more than shown here, but like I said, half the fun is selling and buying new stuff.