NEED HELP FAST (best combo)

What should i do, i have a couple of ways i could go with the 3.42 gears and i would like to know which way would be best. here it goes.

I have a 94 lt1 and it has 2.73 #2 series carrier

1) ebay http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7907015915&sspagename=STRK%3AMEWA%3AIT
&
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7906692895&sspagename=STRK%3AMEWA%3AIT
or
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7906748291&sspagename=STRK%3AMEWA%3AIT

2) get Strange 3.42 #2 series carrier w/ insatll kit

3) or go used http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7907198770&sspagename=STRK%3AMEWA%3AIT
&
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7906692895&sspagename=STRK%3AMEWA%3AIT
or
http://cgi.ebay.com/ebaymotors/ws/eBayISAPI.dll?ViewItem&rd=1&item=7906748291&sspagename=STRK%3AMEWA%3AIT

I would appreciate any help b/c i want to get this all going.
thanks