here's what i did on my ES.
new:
MSP bar
MSP endlinks
re-used:
ES bushings
ES horseshoe brackets
it takes a little bit of finesse to get the horseshoes back on the car over the larger bar, but it'll work if you install the bolts first, then put the other end of the horseshoe over the stud. i would recommend greasing the bushings before you put them on the new bar...i didn't and it's begun to squeak a little bit. i don't know if this will work the same on the p5.
new:
MSP bar
MSP endlinks
re-used:
ES bushings
ES horseshoe brackets
it takes a little bit of finesse to get the horseshoes back on the car over the larger bar, but it'll work if you install the bolts first, then put the other end of the horseshoe over the stud. i would recommend greasing the bushings before you put them on the new bar...i didn't and it's begun to squeak a little bit. i don't know if this will work the same on the p5.