@mwylcxca97 I have a Nissan altima and have 3 across! For my forward facing toddler I have her in a Graco tranzitions and my twins are in rear facing graco slimfit 3LX. It has to be the 3LX, not the standard slimfit.
When I had the twins in bucket seats they were in graco snugride snugfit DLX...