Probably all that 73-87 porn you got on there.....
Squirt it down with some penetrating oil from underneath and after it soaks, go back and on the inside hit it with a Hammer, hard.
As for the Torx, all I can imagine is so it would be difficult to remove. At least it isn't like my Jeep that has the TlT in the middle of it.....
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Chris Lucas
1973 Chevy C-10
1978 GMC Jimmy (2WD) - SOLD
1987 R10 twin turbo LS
1991 R3500 SRW CrewCab
1985 K5 diesel swapped project
1989 K5 2WD conversion w/ Vette susp Project
Captkaos Customs
73-87chevytrucks.com