i've burned up two phantom slips... the old style and the new style with the upgraded springs.
never caused any differential damage, tho, even with 260+whp... it just wore out VERY quickly.
save your money and get a Quaife.
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1997 Prelude, H23A1 VTEC
Items for sale:
H22/23 block and all internal parts
4 5th gen Prelude wheels, 16x6.5, 5x114.3mm bolt pattern
More stuff for sale:
https://www.tamparacing.com/forums/showthread.php?s=&postid=472993#post472993