$75 per side. and that ratio will not be fun to drive at speed with. i have a 4.11 hilux LSD in mine and she sings fairly high on the freeway at 100. i haven't got a tacho on her atm but i reckon i'm revin at about 3200 in fifth at 100kmph.

as for the mini spool, they are a cool thing to have but when it rains and the CA just decides to boost, goodbye traction and forward driving. it'll fishtail like there's no tommorow. also takes a lot out of your turning circle (unless you arc up the tyres ).

unless you get it at a real good price, i'd leave it alone (sounds like its worth a heap). but i guess you can always get a different centre... how much, ballpark figure, are you lookin at?