Programming a 2nd gen key for a 1st gen?

Hey a buddy of mine has a spare key blank for a second gen tacoma with the built in keyless. He doesn't need it so I can have it if it will program to my truck. Anyone know if it will work with the 1st gen keyless system? I don't want to cut it if it won't work... That would be a waste of a good key.

The key looks like this but I can't find them for a taco. Only camry, rav4 and other toyota. He might be lying.

 

subbed interested as well

 

I looked into that before and from the reading I did it cant be done (easily anyway). Each remote has a unique programming for its generation of vehicle.
Also, is the key even the same? Like can it be cut to fit in a 1st gen?

 

According to this link, the OEM remote will work on
http://www.fobkeyless.com/2004--2007-Toyota-TUNDRA-TACOMA-SIENNA-CE-Remote_p_142.html

2004 2005 2006 2007 2008 2009 2010 Toyota SIENNA
2005 2006 2007 2008 2009 2010 Toyota TACOMA
2007 2008 2009 Toyota TUNDRA
2008 2009 Toyota Sequoia
2008 2009 Toyota highlander

I don't think the RAV4 remote will even work on a 2nd Gen., let alone 1st Gen.

 

Exactly why I was wondering/ suspicious. He doesn't have a tacoma anymore but he has a camry with the key I linked in OP. I don't know what key is used in the 2nd gen tacos but I didn't think it was an all-in-one style. I'm not going to even attempt getting it cut for my truck then because it's an expensive useless key since it won't program. Damn. The simplicity of that key would be tits.

 

^ I'd still need a little key for the fuel cap, and another for the tailgate.

 

Anyone have any idea if the FJ style remote head key (keyless entry right in the key) would work for a 2012 Taco? That is th eoly thing that I miss from the FJ. Now I have a key and a separate fob. That, coupled with ADT remote, wife's Prius key and home and work keys makes for a full carabiner.