Differential help

["Arthur R. Rockwell" <arthurrockwell@sbcglobal.net>]

Hi, list.
Any suggestions on the easiest, quickest and least expensive way to swap out
the gears in my stock '66 differential to reduce the ratio and make the rear
end faster in top gear?  First gear seems a bit low & slow on the swapped
SR20DET/5-speed and the engine can handle higher gearing.
Thanks in advance.
Arthur Rockwell
'66 SPL311 SR20DET
North Hollywood, CA