I wouldn't run either of those turbos with 30k trailer or grossing 30k either
S362/s364.
I have a gt4088r(63.5m) comparable is the s362 which actually flows more. I gross upwards of 36,000lbs and it's the biggest single turbo size I'd put on it..
If you want more 62/75-80 twins
X2 or twin the stock turbo