Need help/advice on freeze out plugs on 96 celica gt asap!!, Need to replace freeze out plugs Options

[Robbie1902]

So i found out last week my coolant was strait ****ed and wanted to flush everything and get some new coolant in. Long story short i left it running and forgot about it for a good 30-45 mins and when i came out it was smoking overheating so i shut it off, but didnt let it seize i slowly let it back down to opperating temp via starting it letting it run for 30 sec then shutting it off... got a ride and went home. Today i went back there with a buddy filled up the radiator with like 3 liters of water cuz it was pretty dry of coolant cuz the former coolant was chunky and rusty colored. Drove it for 5 mins and started getting pretty hot so pulled over turned it off let it cool down then drove 2 more mins to where i was working no more overheating issues. Jacked it up in the front noticed it leaking so after a while off trying to look for it i found it and it was the freeze plug 2nd one in from pass side.

So now i would just like advice/suggestion im going to replace all them, from people who have done it are there any techniques or tips for doing these. Thinking we need to do it from the top and remove the intake manifold. Were going to attempt it and hope that ecen after changing it the headgasket or waterpump isnt ****ed you know.

Let me know i appreciate it

Rob