Wanted to let folks know, in case they are interested... Changing from C6 to a manual 5 speed, using new TKX. plenty of tunnel clearance, but since the stubby shift shaft sticks straight up, do need the full length original cut (for factory auto floor shifter) + some 3" forward front, for trans install. This very likely applies to 66-67, likely 65. FE engine.

Tom in VA

TKX tunnel clrnce a.jpg

TKX tunnel clrnce b.jpg