[Longhorn Man]

Fuel injection swap... that all depends on your level of mechanical ability.
For some, it's simple.
For others... it'll cause pulling out there own hair, lots of cussing, and then the sale of an incomplete object.
I would say it is a solid 8 - 9 out of ten on difficulty level. you'll need to know electrical work, some fab work, some modification, the general knowledge of swapping stuff around, and even exhaust work. On top of all that, you'll need to know your local smog laws, becouse by the letter of the federal laws, that 72 will require to meet the smog levels of the donor that gave up it's engine.