Hooboy, I have; or rather I am in the middle of doing the same swap in my '62 (235/6 cyl)short bed/step side. I'm very grateful that I have a couple of expert mechanics helping me. This is definitely NOT a bolt-in swap, although many things do actually bolt up. The good news is that the tranny does have matching bolt holes to the stock 6 cylinder bellhousing. You may also use the stock pressure plate and throwout bearing (if you have a hydraulically slaved clutch; if it's not a hydraulic clutch, I don't have a clue). Now, you have a choice. Do you want to shorten both the input shaft (the pilot bearing portion) by 1/2" and the front transmission bearing support by the same distance? Or, do you want to use a purpose built 1/2" spacer between the tranny and the bellhousing and don't cut anything? Either will work. I chose the spacer method simply because I already had one from a previous project. Finally, you will need to find an appropriate clutch disc. The stock pressure plate will accept anything from a 9" to 10.5" diameter disc. The important issues are that the disc fits the input splines of your T-5 (mine is a 14 spline) and that splined center of the disc is no more than 3/4" thick and is centered in the disc plate (it cannot be offset in either direction). I got a 10.5 McLeod performance disc that is 5/8" thick at the center and fits perfectly in between the pressure plate and flywheel. Use grade 8 bolts in every circumstance and don't forget to fabricate/build a tranny tailshaft mount, too. You can use a simple Anchor mount with a single lower bolt, then make a bracket that supports from below and bolts to the front of your existing crossmember. Then shorten your driveshaft (mine will be 52" from center to center of the U-joints) and you're ready to go. Oh one more thing; did I mention that the T-5 is taller than your stock three speed...by a lot! At least 1.5 inches taller; and it doesn't fit with your stock floorboard and a portion of your firewall in place, either. Get ready for some serious shop floor tranny tango. It was a real bummer to cut a portion out of my lower central firewall since my floorboards were in pristine condition. Anyway, you are going to have to either find an original 4 speed floor pan to modify and install, or fabricate your own sheetmetal to replace what you have to cut out for tranny clearance. Some other issues to watch out for are the shifter location; you need the forward shifter location. The size of the shifter base (note if it is approx 3"X4" or larger)...they each require different shifters and most will be for the larger Mustang opening. Also, pay attention to the speedometer output...if it is an electronic sender, you will need to buy a converter from one of the gauge companies to keep your original cable speedo. Better is getting a tranny with a mechanical (cable drive) output. Just do your homework in advance. Finally, you should be aware that there are a variety of transmissions available; the gear ratio combinations differ between model numbers. You'll want to match them up to your final drive ratio and tire size for optimum performance. Mine should be done in a week or so...I hope! Bill
