I got myself a Squier Vintage Modified Jazzmaster as the price was right, but after having played it for a while I was only partly satisfied with the Seymour Duncan Designed stock pick-ups. I was looking for the sound I remembered way back when I was very young and decided to try the Fender Pure Vintage Jazzmaster set as the reviews on the internet and Thomann's customers were overall very positive.
When I started the conversion it took some close looking at the diagram in the box to figure out which was the neck and bridge pickup. A small label on each pick-up would have helped a lot. In any case the replacement of the pick-ups went without a problem, just a little bit of work as all strings have to come off in order to remove the pick guard and solder the leads onto the appropriate points.
Once I plugged in the guitar with the new pick-ups I was pleased by the sound. If my memory serves me well, this was the sound I remembered from way back in the late sixties.
My Squier is now a Jazzmaster, not a Stratocaster nor Telecaster. I am happy with these pick-ups and have no regrets concerning the upgrade.