600+ hp in e30. what rear end

[Wanganstyle]

Are they still holding up?

My local guy sent the 188mm dss axels down the 1320 over 100 times @ 1,000rwhp

Do you have more than 1,000rwhp?

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[Madhatter]

still has an M20 in it at the moment while I wait for an operation, no chance of breaking anything with that in there. :D