73 Fastback w/Lincoln Mark III 460

I have a 73 Mustang Sport Roof (Fastback) with a 73Lincoln Mark III 460 motor and C-6 Automatic Trans.  I own the original 351 Cleveland & C-4 that came out of the car that has not been restored.  
   My question for the Forums is in regards to updating the front suspension to handle the extra weight of the 460.  The guy I bought the car from is a retired mechanical engineer who really did a fine job with the motor swap but suffered a heart attack before he could drive the car much.
  When I put the car into gear the front strut bushings are creaking and I suspect that it is original equipment.  After inspecting the bushing I can see they are old and have some stress cracks in the rubber etc.
  I have been searching the internet for any advice on similar project with not much luck.  I don’t intend to put the 351 back in the car and only keep the original for a future owner (My 13yr Old Son) who may want to put it back to into the car.
  I know that some people feel that such an attempt is a travesty at best but I enjoy the extra power and really have no complaints other than the creaking in the front end.  I am searching for an economical ($700.00 or so) front end replacement kit that could handle the weight but also can update it for safe operation.  Thanks for reading and I look forward to your comments.  

That’s a great swap/combo for the ’71-73 Mustang body style.   Back in the late 70’s early 80’s I had a ’71 Mach 1 (originally an F-code 302-2V) for a short time that had a 1973 460-4V from a Lincoln Town Car.  It was a tremendously torquey car but other than the Holley 780 carb and glasspack mufflers they were no other engine mods.  With those early emission add on’s and retarded cam it was all through before you got to 5,000 rpms but it was fun getting there.


Mine had the original Mach 1 with 302 suspension and actually rode and handle fairly well best I remember. It still had the original 8” rear-end with 2.79 gears.   If your car was originally a 351, it probably is even better set up for the big block.  I’d just replace worn looking suspension parts and enjoy the ride.  Just for grins for now, try spraying a little silicon or even brake fluid on the dried out rubber parts and see if the squeaks stop.  If parts are too worn out, too brittle, or damaged, they’ve still need to be replaced for a safe ride.  It was a fun car and I always wondered why more people didn’t do it.  
Bill Hamilton
My 1970 Mach
Mustang owner and daily driver since 1970

I agree with Bill's comments. Look to Moog for new rubber parts.  Try to stay away from poly bushings when you replace yours. (they have a tendency to squeak)  

Thanks for your advice from both.  I feel better!  It really is a fun car and I just wanted to make sure I am doing the right things. This is my first Mustang so I am still learning everything I can.  Your advice is much appreciated.  

I have a 429 in my 67 that was originally a 289 car. I did use Mustangs Plus "Grab-A-Track" rebuild kit and I have Granada spindles, the Shelby drop and anti-sway bar. Other than that the suspension is stock. I drive the car as much as possible and have no issues. The 67 only had the 390 as an option and the 429/460 is more heavy but the 71 Mustang had the 429 as a factory option so the car was actually designed to handle the 429/460 so you should be able to freshen it up and have no problems.  
67 Hardtop 429/C6 4wheel disc brakes