on my CIJ 51p reissue, I replaced the stock p/u's with the Lindy Fralin 51p split coils, mostly to help with hum. They sound a little different than the stock pu's, more depth and a bit brighter, but not significantly (at least to my ears). Really helped the hum though.
I also changed up the stock black matte pickguard with a layered and beveled white pearloid one from Pickguardian.
I kept the stock two saddle bridge. I don't have any meaningful issues with intonation with the stock bridge.
Looks good, sounds great. nice bass.
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