I’m replacing my old non-functional cat with a new high flow one. Finally removed rusted out old one with the help of my neighbors giant cutoff wheel, but I’ve got a problem. Which way does the new one go on? I imagine it only works if you line it up one way, but I have no clue how to tell the inlet side from the outlet. Also, am I correct in assuming once I get do figure out the inlet side of the cat, that would bolt up to the downpipe and outlet to the midpipe?? I can’t find any info on a cat install online (that doesn’t assume the mechanic knows what their doing) and if I ask this on a Miata forum I’ll be permabanned Help plz oppo