Wider bottom bracket

Sick Bike Parts do some very wide BBs for 4-stroke builds or whatever, and conversion kits for fitting the cartridge BBs into an "American" (unthreaded) BB shell.
 
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I have no idea how long i need but, definitely longer than the ones i just bought

Here's what you do:

Install the engine.

Then install the bottom bracket you have.

Take measurement as to how much clearance you need on each side/

Inform the vendor how much clearance you need on each side.
 
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