i'd like to pick up a B16 Trans or a GSR trans

i have a pretty clean LS tranny...

i recently sold my LS longblock and picked up a GSR longblock but the LS trans is killin me lol

before i did the swap to the GSR motor the tranny didn't grind at all...

now that i swapped the tranny it grinds 3rd at 8k only...not at 6 or anything....its weird

i think if the tranny goes back on a LS motor it won't grind...not sure why it started..it shifts great otherwise...i can't guarantee it but i'm pretty sure it'll be fine

LMK what the midwest has