Extremely long drivetrain. This is usually compensated for by cutting the grill in order to push the engine forward. I would be checking the grill to insure it is mounted and secure. You will also want to check the rear driveline length. If it is running the stock offset D44 rear axle and 18 t case, you may be alright, as the 18 locates the driveline low in relation to the diff. If it has a 20, then driveline angles can become excessive, especially with a lift.
Insure the swap is clean. All mounts are solid, wiring is clean, steering is good, exhaust is done right, trans cooler is hooked up, and throttle linkages are safe.
You will have to be careful of the stock 27A front axle, as it won't stand up well to the SBC under load.