If you have not cut the shift hole yet, might I suggest that you cut conservatively small, then bolt the eng/trans in again to be sure of the correct location, then open up larger from there.Mar. 11, 2021: Well, it's been quite some time since my last post. And while I'd love to show some massive amount of glorious progress, I don't have a whole lot to show. But over the last 2 months I have been able to make a few more little steps that get me closer to being ready to lift the body and finally start refurbishing the frame. I purchased all new steering componets, all new front & rear suspension parts, and new motor & trans mounts from RockAuto. I also scored a deal on a Saginaw 4 speed trans, so I was able to get the engine/bellhousing/trans mocked up in the car. I got some cuts made in the HVAC box so it clears the passenger side valve cover, and I was also able to lay out exactly where the shifter hump needs to be mounted.
Yesterday I received quite possibly my favorite part ever. It's just a gas gauge, but it's a MANUAL TRANS gas gauge (i.e. no P RND21 at the bottom), and it's NOS! I knew they had existed, but I've never come across one before, and having it makes me super excited about my goal of making this car look, taste, & smell like an orginal manual trans car.
Saginaw 4 speed.
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Engine/Bellhousing/Trans ready to be mocked up.
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Engine/Bellhousing/Trans bolted in (for now)
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HVAC box modifications so far.
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Layout for shifter hump placement.
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NOS manual trans gas gauge.
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My '78 Caballero is a factory stick shift model. The "cut" through the hump looks like it was done with a torch, and then the bulbous part welded over. I see your layout lines are nice and sharp. It will look good and give plenty of working room when finished.