Tunnel Comparison

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Tunnels from other Datsuns.

Overview

Tunnel is made up of two body panels: The lower dash (firewall) and the front floor, which has the shifter hole and the gearbox crossmember mount brackets.

Generally speaking, 63-series 5-speed and Automatic Transmission use the same tunnel.

B210

B210 JDM Late

67300-H7400 DASH-LOWER A12+14.F4,AT also Van.7510-
67300-H7900 DASH-LOWER A14.F5
67300-H7900 DASH-LOWER L16

74300-H7401 FLOOR-FRONT F4
74300-H7421 FLOOR-FRONT AT+F5
74300-H7800 FLOOR-FRONT V.7510-

B210 JDM Early

This indicates that Auto and Manual share the same tunnel entry (same size opening).

67300-H5000 PANEL ASS'Y-dash lower
67300-H5001 PANEL ASS'Y-dash lower (from '74-9)

This indicates latter part of the tunnel varies Auto vs Manual, possibly for the gearbox mounts.

74300-H5000 FLOOR ASS'Y-front M
74300-H5020 FLOOR ASS'Y-front A

B210 North America

Coupe & Sedan use the same tunnel body panels.

North America B210 has eight different floor pans:

4-speed
 1976-1978
 1975 with Converter bulge
 1975 without Converter bulge
 1974 - same as JDM early

Automatic/Five-speed
 1976-1978, fits 63-series 5-speed FS5W63A
 1975 without Converter bulge
 1975 with Converter bulge
 1974 - same as JDM early

67300-H7700 ASSY-PANEL, DASH LOWER 0877-
67300-H7301 ASSY-PANEL, DASH LOWER 0875-0777
67300-H7300 ASSY-PANEL, DASH LOWER 0974-
67300-H6100 ASSY-PANEL, DASH LOWER -0874

74300-H7401 ASSY-FLOOR,FRONT (MANUAL) 0875-
74300-H7200 ASSY-FLOOR,FRONT (MANUAL) 0974-0775
74300-H7300 ASSY-FLOOR,FRONT (MANUAL)CAL. 0974-0775
74300-H5000 ASSY-FLOOR,FRONT (MANUAL) -0874
74300-H7421 ASSY-FLOOR,FRONT (5-SPEEED) 0476-
74300-H7421 ASSY-FLOOR,FRONT (AUTO) 0875-
74300-H7220 ASSY-FLOOR,FRONT (AUTO) 0974-0775
74300-H7320 ASSY-FLOOR,FRONT (AUTO)CAL 0974-0775
74300-H5020 ASSY-FLOOR,FRONT (AUTO) -0874