by kiks » Fri Aug 01, 2014 7:40 am
That said if it's for a GD impreza, we're talking 1988 subaru underneath.
R180 is a bolt in solution but they still shit themselves with any real torque and abuse. There's a reason they arent used in even modest powered, low torque RB25 cars.
Your best bet is to do it once, do it right, and throw a long nose R200 in with nissan shafts and hubs redrilled to 5x100. Not exactly DIY unless you have the skills and knowledge, but not beyond what's doable by a competent workshop and not 'overly' expensive, also larger range of ratios to choose from and cheaper off the shelf centers. Assuming you want it for sick dorifto skidz and maccas hard parking then you'll prefer the naturally heavier spider gear assembly which means it's happier to spin two with a less aggressive LSD etc.