highly recommend the under drive at a minimum, if you are wanting lower low i also highly recommend the 3:1 low gears... P/T, under drive, low range gears 1000% my favorite upgrade(s) for my 100 series..
does it clunk every time you shift...
when i first installed my hubs i was running in the same configuration and did so for 4 months maybe, no clunks at all.
have you checked all your u-joints?
Have you swapped your drive flanges back on?
I would probably just live with until you...
did you use OEM CV's? did you get the right C-Clip installed in the end of the CV in the hub?
there is usually a little play axially between the CV and the Hub assembly. if you are just running hubs in the front and still have the VC in the...