Toyota celica 1994 ST202 Which gaskets ?

[ashj22]

Hi guys. I'm replacing the straight pipe i have on and putting the catalytic converter back on.  Does anybody know.
1. Am i supposed to use gaskets for both sides ?
2. Which gaskets do i use ?

I'm assuming on the front there is spring bolts and these wont compress the joint enough for it to be leak free using a flat gasket like this.
https://www.ebay.co.uk/itm/233264775214?
The front end is where you can see the past sealant.

What i'm thinking is a donut gasket something like this https://www.ebay.co.uk/itm/402173556901? on the front and the flat gasket on the back ?

Thanks

[ashj22]

can't edit the OP. Or should i be using this instead of the donut gasket ?
https://www.oemgenuineparts.com/oem-parts/toyota-gasket-exhaust-pipe-9008043036?c=bD0yJm49U2VhcmNoIFJlc3VsdHM%3D