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Discussion Starter · #1 ·
It looks like I will be trading my 2005 Mustang GT for a 68 J Code XR7 with a C-6. I am looking to makes some performance changes. I currently have siting in my garage a 331 stroker with a bell housing, clutch linkage, and top loader 4 speed from a 1966 mustang. Will this fit in a 68 cougar?
 

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Discussion Starter · #3 ·
Thanks for the reply. So do I use the mustang pedal setup or do I need to get a cougar specific pedal setup? What about drive shaft? Can I use the cougar or mustang or do I need a custom shaft?
 

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Mustang for the same year as the Cougar. O don't think the 65/66 will work. But I could be wrong. Modern Driveline makes a good reproduction.
 

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i don't think you will need a custom shaft - the cougar one should fit. Not sure about the pedals? Like Neal says - MD sells all the components for swaps if you run into a snag.
 

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Discussion Starter · #6 ·
OK so I did not get the 68 but I did get a 67 with a 390 and a C6. Went transmission shopping a got a quote for 6,000 to do a tremec 5-speed conversion. I was hoping the conversions could be done form under 4K. Any suggestions?
 

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OK so I did not get the 68 but I did get a 67 with a 390 and a C6. Went transmission shopping a got a quote for 6,000 to do a tremec 5-speed conversion. I was hoping the conversions could be done form under 4K. Any suggestions?
Sure! Buy the TKO and put together the conversion yourself. Probably the only way to get where you want to be. The transmission is about $2450 alone.
 

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Just as well you didn't get the '68. A J code would have a C4.
 

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Discussion Starter · #9 ·
Are there other, more economical 5 speeds that will hold up behind a 400+ hp 390 available? I have not been able to find one.
 

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Are there other, more economical 5 speeds that will hold up behind a 400+ hp 390 available? I have not been able to find one.
None that I'm aware of.
 

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Discussion Starter · #11 ·
So maybe I should be looking for a toploader setup and changing the 3.7 rear to 2.8 or 2.91 to make it more streetable
 

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I have a perfect, concours detailed, rebuilt RUG-E3 I'd sell for $1500. You can go to 3.25 gears (the limit IMO) without OD and it works fine on the street. That's what I have now (until I get around to putting my new set of 3.89's in), I ran the 3.25's with the toploader.
 

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Isn't that a small block toploader?
Yes, and to my knowledge, small block toploaders were used in 390 cars from the factory.
 

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http://www.mustangtek.com/toploader/RUG-M3.html

If your '66 mustang toploader is an original, HEH-HW or whatever, you can probably use that too (not sure the tailshaft housing will work though).

Small block TL's will handle 400+ HP.
 
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