Ditto on the rusty right front corner of the engine compartment being a deal killer. You have to really get down in there with a flashlight and look carefully, removal of the battery is a must for proper check out. Here's what the area looks like from the top:
Then jack the car up and check the same area thoroughly from underneath. The battery box is just above that area and a leaky battery is the source of the majority of the woes in this area.
Otherwise, since it's a '75 the sore spots of the earlier cars should have been fixed, like the 'rear shift' transmission. It's easy to tell; look on the drivers' side of the transmission and you should see a big plastic cover about halfway down the side of the case, that's a side shift.
If it's been converted to carburetors, that will save you much hassle and $$ getting it going. Having said that, the stock FI is pretty simple and easy to work on, just be warned that some FI stuff can be pricey. Which is why so many were converted to carburetors.
I had a '71 1.7 car, slow as molasses in February but it handled like a dream even on crappy Western Auto tires.