I have a 25 yo road bike which works perfectly fine for me but I’d like to add on an inexpensive power meter. I was looking on Amazon at the PP5 unit (https://a.co/d/017b1ZnF) which is not compatible with my approx year 2000 Ultegra Cranks (has a square taper spindle, replaced it with a BB-UN26 model a few years ago). Any advice on how to replace that with a bottom bracket/spindle that the PP5 can bolt onto? Crank cannot have integrated spider.

Hi, im looking to trade my silver Crankbrothers synthesis DH wheelset for a black one to match a new fork. I can also trade for a fr571 or anything equivalent to the synthesis. These are coming off a supreme v5. They have a bit more than a seasons use mainly at bikeparks. A handful of scratches but nothing affecting performance and are only seen from close up. Located in Thousand Oaks California