This is a example of why a signiture with some general info on your car helps. This a 305 or a 2.8 RS?
Shouldn't matter though .. anyways....normally its a 1156 bulb. Standard single filiment taillight/reverse light bulb.
for timing, a lot of TBI people run 5-6 degrees base advance. You can do that but if you hear pinging then back it down to 2-3 degrees. Remember to disconnect the EST wire.
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2001 Trans Am WS6 •SLP Loudmouth II •UMI Suspension •12.857 @ 109.57
1996 Trans Am WS6 •Pacesetter Longtubes •Strange 12 Bolt •Spohn Suspension •11.152 @ 123.85
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