Cool, thanks for the info andrew, I'll look into the kit. I got my idea from hot rod magazine http://www.hotrod.com/projectbuild/1...tback_mustang/. I liked the fatman kit because of the fact you could use pretty much everything from the '94-04 aftermarket so its easier to get parts for if something fails, but I agree with you on the rack, butand the oil pan, headersand everything else stays stock.I calledfatman up and theysaid you can now trim the huge shock towers in you 64-66 to fit bigger motors and headers because you don't need the upper control arms anymore. Also no cutting into your car, best part. But I'm definitly going to look into the rrs kit, I emailed them for pricing, but could you give me idea for what it costs, thanks.

 

Nevermind on the price andrew, I'm slow, I forgot I hada npd catalog on my computer, thanks anyways.

 

How much work are you willing to get yourself into?

I'm as die-hard a stick-shift fan as you will ever find, so I'll recommend either the World Class T-5 or a Tremec. For any sort of daily driver having an overdrive top gear lets you play with deeper axle gears. If youhad mentioned "347" or perhaps even "a strong 331", I'dprobably suggest the TKO instead BTW, the Tremec has a choice in some of the ratios. And at least with the Tremec, you may be in for some tunnel mods (I've been through a Tremec swap, although it was into another make).

Best from a structural point of view would be straight between the subframes to straighten the load path out as much as possible. The end result is as stiff as your choice in tubing size and wall thickness can make it, and you won't have any little "kinks" that will flex (read: compromise stiffness AND become points where fatigue cracks would be more likely to form). That some floorpan mods might become necessary tends to work with any tunnel mod requirement in that you'd do the whole job just once. I've made this SFC suggestion elsewhere, and I know of at least one individual who has done it as part of a very serious and extensive effort. This person has also done some work with torque boxes.

I'm also aware of a few other chassis stiffening tricks that don't involve a roll cage.


Norm
(I do structural and stress analysis stuff for a living)

 

on there site click the price list it stage one is 2,995 plus shipping but it dont come with a rack you can use your oem steering or any rack kit you like. but rrs has a shock tower notching kit which you could use with the fat man fab kit

 

Yeah I saw I when I found my npd catalog, thanks, the notching kit is $194 through npd, but I'm not putting in a big enough motor.

And sorry for stealingthe threadrgh69

 

Don't forget the underhood bracing.
At the very least a stock export brace and Monte Carlo bar.Or,there are some good bolt on aftermarket ones by TCP and others.
I had mine fabricated then chromed.

[IMG]local://upfiles/25247/C786BD39F44B484AA6EC03F8C28264B8.jpg[/IMG]

 

Underhood bracing is a must, but if you are going the efi route you won't be able to use a stock style export brace, the intake manifolds will be in the way. This brace will work http://www.totalcontrolproducts.com/tower.html, and you can make a whole system out of it with a monte carlo bar from them.