yeah get rid of it and just blank the pipe off...... i pulled the nipple out the mani and tapped a thread into it then jb welded a bolt into it

also get rid of the check valve its attatched to... the pcv valve.... the whole point to doing the catch can mod

you should have the pipe from bottom of block teeing into the pipe from the rocker cover then into catch can, then out the catch can and into hockey puck and into tip. (i have read various comments about leaving the puck in or removing it and i dont know what is best, atm i have removed it but kept it just in case)
hope this helps!!!