I think those are the same as the M90 couplers, you can get them at intense-racing and ZZ performance. Should be able to do it in about 3 hours, I seem to recall you need to remove the supercharger to do it. So you will need a SC gasket, throttle body gasket, and coolant O rings.
You will need to check at ZZP or intense. I believe the SC gasket is about $10, the TB gasket is about $8 and the Orings are like $5. You will also need some red RTV to seal the snout, there'* no gasket there. You can either use the snout oil, or save some money and use Mobil1 synthetic 5w30