I just joined today and I was wondering how difficult it would be to take the diff lock off a 1998 pickup I have and put it on my 1994? First of all, and this may be a dumb question, but where can I find out the gear ratios of both trucks. One is a '94 SR5 V6 4X4 pickup and the other is a '98 4X4 Tacoma 4-banger. Any input would be great