You need to pull the weatherstripping piece off the firewall between the engine bay and the cowl area. It could be tough to remove, but it should just pull up and off... Then the cowl panel will just be flopping around...
78 Silver / Black-white #295
84 Ruby Red / Black AO84
88 Dark Blue / Linen-Black
92 Polar Silver / Dark Blue 92EURO
93 Arrow Blue / Black