I'm helping my folks out and trying to rehab their car. It's in decent shape for it's age and miles, but does need attention.

I finally spent some time behind the wheel this weekend and these are the issues I've found.

1) This one moved to the top of the list as it started yesterday. P0303 code on highway under load (going up hill) Plugs are really old as are wires, over 100K on them I'd imagine so I'll replace those first and see if it fixes the issue. If not, any advice on how to proceed is appreciated as that back 3 plug replacement looks like a little nightmare.

2) Fluids. I'll change them all but I may need to hold off on the transmission pan as it has no drain bolt. I HATE that.

3) PCV Valve - Changed yesterday

4) Fuel filter - will be changed tomorrow

5) Does have an oil leak. Not sure from where but it's about a half a quart a month.

6) Trans does have a leak. Not sure from where.

8) Does leak coolant but a check of the oil doesn't show any coolant or indicate a head gasket leak. It doesn't overheat.

9) The AC will stop blowing cool air on the highway. I noticed that under load yesterday when I was getting the CEL and stuttering that the AC wasn't cold. As soon as I got off the highway and was driving in town, the AC would blow cold.

10) Drivers side, both windows are being held up by duct tape as what I assume are the window regulators are shot. Will need to replace those.

11) Need to change the super charger oil.

If thats all done and it's running well, then I'll tint the windows. lol

If any of you have any insight on how best to proceed with any or all of these issues, or if there is something I'm missing, your assistance is appreciated. Thank you.