I took a look at the Kwikee T-Style RV Door Holder w/ Bumper # LC381409 that you mentioned, and it appears that it actually measures 1-1/8" x 2-1/2", making this only 1/8th x 3/8" larger.
While we do not have an exact fit, we do have the:
-T-Style Hook and Keeper Door Holder for Enclosed Trailer # 37210465 which has the same 1" horizontal hole spacing, but is 2-1/4" vertically, making this only 1/8" larger than your current latch.
This product measures 4" long, is polar white in color,... view full answer...
We do have a few electric A-frame jacks with a 2 inch diameter outer tube:
Stromberg Carlson # JET-2500 rated for 2,500 pounds.
Ultra-Fab # UF38-944017 rated for 3,500 pounds.
Ultra-Fab # UF38-944037 rated for 3,500 pounds. This jack also includes a 7-way trailer connector
Ultra-Fab # UF38-944016 rated for 4,000 pounds.
Each jack offers 18 inches of lift. I've also attached videos of each one for you. view full answer...