hell yea!! i just need to get the vam connecter and the ecu! then slap the engine back togetherYou can use your existing Mustang harness. There're only 4 wires from the VAM connector that need to be spliced into your Mustang harness. I sent you the link to Stinger's site last week. Read it. It's pretty simple.
Also, with almost 300k miles a rebuild would be in order however..........by the looks of the pics and if you want to go cheap.......give it a valve job and a seal-n-shine, drop it in and drive the crap outta it!