It will probably cost you about 10-15k to put that engine in your mustang, your better off buying a car the engine fits.
That would be a nice combo :bigthumbsupMy swap preference would go in the other direction. A restored '68-70 Fastback with a modern FI Boss 302 or supercharged 4.6L would be a fun car to drive.
All that stuff adds up quickly. stand alone ecu 2k+ ,stand alone trans ecu 1500+, custom drive shaft 1k. An entire gauge package cabable of working with your new ecu. start adding what the custom engine mounts are going to cost with the trans mounts probably another 1k. A custom engine harness built from scratch, 500 bucks minimum if you build it yourself. alonge with a custom interior harness for gauges and interior electronics. brake booster and clutch slave will need changing to somthing that will work with the 351. custom headers to fit inside the stangs frame rails, and custom mid pipes to make every thing line up another 1k. Drive buy wire will have to be replaced with a cable accelerator system.First, it is illegal and never pass inspection. It could easily be done for no money in a day: don't know where these guys are getting this 10,000 figure. Issues are fuel pump, engine and tranny mount, drive shaft, and gauges.
Thank you so much for being a more upbeat individual on this. and i gotta do some homework on that "special someone" to pass me on emissions. anywho thanks for your help stang girl.C'mon guys ... he's got a v6! Hell just throw a MSD distributor and a holley 4 bbl on that 351, forget the ECM altogether, and be done with it! In regards to smog, he can just do like the rest of us who have "highly unmodified --- cough --- cough--- mod motors" do to get it past smog --- find that "someone" who can get it to "pass"
If you can't get 350 to 400 hp out of a 351 cleveland .. you aint much of a mechanic! I think it would be a cool swap.