Bought an ’88 2wd (225k) on tuesday...got it home after 20 mile trip...great power, cylinders felt great. shut it off and tried to restart and it was dead. jumped it and everything seemed fine through thursday.
I took it on the highway thursday.
Temperature was on the high end for the 2nd half of 40 mile trip...may have been pushing it over 70 too much. fluid was good, top two belts looked fairly new…didn’t get to look at the serp unfortunately. exited and heard the belt shred.
It was still mostly intact when i pulled over and examined and had a mile and a half to get to destination so tried it. immediately broke and overheated as i pulled into the grass. looked like spray from upper radiator hose on radiator. Radiator light is stuck on according to seller because of sticky gauge.
I was wondering if the battery was going could the drained alternator have possibly overheated the belt.

what procedures should i follow at this point aside from belt replacement? should i just change belts and fluid and see how it does? then test the fan clutch. maybe replace rad cap and thermostat? is it easier to change belts with passenger seat out? i will probably want to give it a thorough looking over once i get it back home so may be best to go ahead and do that. is it pretty straightforward or are there instructions for getting the passenger side open?
i have to order the belts so i thought i might go ahead and order the cap, maybe thermostat. anything else i should go ahead and order for replacement?
are these the right belts:
Gates K050323 Alt belt
Gates #9360 A/C belt
Gates #9415 PS belt

thanks for any help and advice.
Jasper